Malicious PDF — malware analysis report

Static analysis result for SHA-256 f992cb91ac3e5ad2…

MALICIOUS

PDF

202.1 KB Created: 2022-02-03 23:13:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 330a5de92dca8cd1b9335a6fb0825b7c SHA-1: c64d31affbe5a9ddf76bca92da55cb3002cb7b42 SHA-256: f992cb91ac3e5ad20f18581dab735a1a8b8f504e4aaf35b96fb7c3cc88b3ec08
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8856

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://norin.co.za/XSRYdR1H?utm_term=anacrotic+notch+arterial+waveform PDF link annotation
    • https://hn-as.dk/sites/default/files/userfiles/file/wejoruwivuwew.pdfIn PDF document text
    • http://studioguidobarbieri.it/userfiles/files/pizid.pdfIn PDF document text
    • http://3gr-group.com/ci/userfiles/files/51298186911.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/sasofomawulofutaruxozo.pdfIn PDF document text
    • http://pereplanirovkaoblast.ru/pict/file/8035370100.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/869ade497fb325f11c68665e2121a19d/93370108740.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/69cbc4de9c097f4d4e3cddce6653e768/33454630811.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16116ce99796ba---magogepusuzejode.pdfIn PDF document text
    • https://hijaulumut.com/contents/files/93049211972.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611f25628076e---fimero.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161acc4485c8f9---ruwak.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/a629d8a609c894144ea774b79f1cfb00/20684712298.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/68066540622.pdfIn PDF document text
    • https://superstolarz.pl/files/files/bilibixuvizaben.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/filuvasegivinutomip.pdfIn PDF document text
    • https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/62736946119.pdfIn PDF document text
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/83002364538.pdfIn PDF document text
    • https://gagasanriau.com/a450d92cb6be01b3b3669c18bfca7901/kcfinder/upload/files/29533365732.pdfIn PDF document text
    • http://indexone.ru/upload/file/26139831142.pdfIn PDF document text
    • http://randalljroutson.com/clients/44711/File/13083367619.pdfIn PDF document text
    • https://vietucmould.com/img-vietuc/files/jomezoririf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002bfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFA1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0002d6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6C1 10564 bytes
SHA-256: 10a6b7356914b053f76c7fcd1587a6aa8a2d87e34a6d87c8d4c054be48e23060
font_02_sfnt_off0002eeb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEB6 16704 bytes
SHA-256: fe60ad1648625141bfe158ee8960d6f16e0f0a161a3a0a1df0306a372f95197d