Malicious PDF — malware analysis report

Static analysis result for SHA-256 191b86f5c06bcd28…

MALICIOUS

PDF

270.0 KB Created: 2022-02-03 09:17:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 1f730f0000b6a1a19dd09c16eac93c79 SHA-1: 23384a773a72b81c08cfff1662147ff18c31402a SHA-256: 191b86f5c06bcd2831f98a77bb11a60322df1cf5dab5b23fc307b223da7f4b5b
216 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3971

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yoyep.co.za/XSRYdR1H?utm_term=proxy+switcher+chrome PDF link annotation
    • http://titusauto.hu/kepek/file/pigijavimiwugu.pdfIn PDF document text
    • https://promenade-perpignan.com/userfiles/file/sowejuluwevexek.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/65263387684.pdfIn PDF document text
    • http://jecoexports.com/ckfinder/userfiles/files/58179108781.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a63fb6c7ea1---nuvumanupasiwisoxekemiwuk.pdfIn PDF document text
    • https://akanaymatbaa.com/calisma2/files/uploads/josamatavujitubej.pdfIn PDF document text
    • http://www.vandiestbrandstoffen.be/uploads/files/jakosexofulimijelotenafag.pdfIn PDF document text
    • http://faizleathergloves.com/userfiles/files/13835138555.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/fipopa.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/09/11/file/15826196913.pdfIn PDF document text
    • http://newms.imprendia.it/userfiles/file/lazojaxigokavo.pdfIn PDF document text
    • https://worldcastlive.com/userfiles/file/82027184481.pdfIn PDF document text
    • http://www.tecs4.com/intranet/ckfinder/userfiles/files/45179759841.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161e16fdd6b539---gefituzomonur.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/161b90591d7eeb---buvewivuvigufe.pdfIn PDF document text
    • http://bscsaoner.in/ckfinder/userfiles/files/88088846426.pdfIn PDF document text
    • http://xn--90ae5b.xn--p1ai/uld/files/mefamogozeraxevetut.pdfIn PDF document text
    • http://sztarmedia.hu/_user/file/wobarufi.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/u8020hp6t435ot3a7chl85opg5/warujilutokowituf.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///nurotejuvoporeveto.pdfIn PDF document text
    • http://www.ascondir.com.br/Gerenciador/kcfinder/upload/files/vununolupur.pdfIn PDF document text
    • https://thingstodobahrain.net/ckfinder/userfiles/files/bemavotewixazeselote.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/19997531888.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/95074h36sda3g3io2gles5124n/baxiwof.pdfIn PDF document text
    • http://tuning-zone.eu/userfiles/file/68067586120.pdfIn PDF document text
    • http://drivingschool-brno.eu/files/37782197919.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/chlpn06o7h008m8b3opk7be1e3/45815827117.pdfIn PDF document text
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/nuwabekewumev.pdfIn PDF document text
    • http://sushiloverca.com/uploads/files/voxaxofaraduwegisageja.pdfIn PDF document text
    • http://hkt-optics.com/hkt/images/userfiles/file/befone.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23866145377.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16108ed2cbb081---vadinu.pdfIn PDF document text
    • https://ginecologmuresan.ro/ckfinder/userfiles/files/jozijuworuxugasipud.pdfIn PDF document text
    • https://uzunlarpeynir.com/dursun/upload/files/23857344981.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/48976210655.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/vefizejinuraba.pdfIn PDF document text
    • http://hanarotalk.com/userfiles/file///460895527.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/likatafopoleberor.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0003e2c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E2C1 18428 bytes
SHA-256: 1ade4134591b9ad29889517182c7f6f7ee48d9c69be18edb727b7c65960dfd24
font_00_sfnt_off000386a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386A4 10484 bytes
SHA-256: e5bd688ee95a53719b6e214a78bec9548447dd020f7fbbca1182e047d7ceb779
font_01_sfnt_off00039e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39E9B 27768 bytes
SHA-256: 57073c8ab3e8ae503b334a4d410bd97f85d3121e397e8a88ca96a688c5183ccd
font_03_sfnt_off000400e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x400E6 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_04_sfnt_off00041808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41808 3904 bytes
SHA-256: c6c10cea0369b93260f076899d69ae8286ea9bcfea0a41e6bf1c2a89f32978f6