Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8778534adb0c3e…

MALICIOUS

PDF

273.9 KB Created: 2022-03-28 19:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: d031ec92a3679658a0f0fd8d864a58f1 SHA-1: d663a0dd790fdd7e6055819c791c95bb7c3255bd SHA-256: cb8778534adb0c3e9c05d6a096a2fc436159002e207c423fc59acda42519ce98
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5759

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://csodamalom.hu/files/files/wiboxejugamelozobagasar.pdf In PDF document text
    • http://vbond.hk/editor_upload/file/8670061784.pdfIn PDF document text
    • http://www.acs-pack.fr/kcfinder/upload/files/52833932180.pdfIn PDF document text
    • https://thehouseconcert.com/ckfinder/userfiles/files/bipotazuvadijifepeg.pdfIn PDF document text
    • http://syscall.com.tr/panel/kcfinder/upload/files/wupesuguwusujurete.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/69652786596.pdfIn PDF document text
    • http://sd-bada.yupucx.com/upFile/file///ITX202202101848212986.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/xifozukigiwo.pdfIn PDF document text
    • http://tasfor.com/files/galeria/files/nesarilotajaxutexurevasif.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/0ab21949f2cbc24de0efa75959457230/xokukamuzutepivar.pdfIn PDF document text
    • http://secohthailand.com/file_media/file_image/file/rixelixidopusipoxonire.pdfIn PDF document text
    • http://thai-apsproducts.com/file_media/file_image/file/sobaxalororexebomemadir.pdfIn PDF document text
    • http://elmarahtravel.com/public/kcfinder/upload/files/xosefokexexukim.pdfIn PDF document text
    • http://asthmabd.net/journal/assets/ckeditor/kcfinder/upload/files/80047777583.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/66257567311.pdfIn PDF document text
    • https://chachachat.info/js/ckfinder/userfiles/files/69265488757.pdfIn PDF document text
    • https://bor-diing.com/upload/files/49476414628.pdfIn PDF document text
    • https://albertsdrukwerk.nl/bestanden/files/43877642580.pdfIn PDF document text
    • http://www.rbn.org.np/public/admin/plugin/kcfinder/upload/files/juvofifazoga.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd0443da0d6---1195632678.pdfIn PDF document text
    • https://gemwares.artchy.com/userfiles/file/netop.pdfIn PDF document text
    • https://konferencia2013.medius.sk/userfiles/file/vonuxiro.pdfIn PDF document text
    • https://softnettechno.com/sribati/editor/uploadfiles/76055090664.pdfIn PDF document text
    • https://associazionemusicaviva.it/uploads/file/64824280238.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/0f501494e6fe6be02a0d9d049f28fe6c/mexixapelolifus.pdfIn PDF document text
    • https://fisheaglesafaris.net/pics/user/file/xoxurobejorozamewokita.pdfIn PDF document text
    • https://www.naturecare.com.au/kcfinder/upload/files/vuledofewubilomojusalem.pdfIn PDF document text
    • http://leviedelsignore.it/gallery/files/didulamanusavava.pdfIn PDF document text
    • http://laiksmodalux.lt/app/webroot/uploads/userfiles/files/82572072220.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622790943b139---65541607097.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/pidibimojuroxex.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/58493721773.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/povurebelidurefu.pdfIn PDF document text
    • https://phucatgarment.com.vn/ckfinder/userfiles/files/67573777271.pdfIn PDF document text
    • http://joyear.com/ckfinder/userfiles/files/xitolasakasevixa.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/81532112034.pdfIn PDF document text
    • http://mestan.by/images/file/81562347822.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=8th+step+worksheet+joe+and+charliePDF link annotation
    • 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 extracted file (font_00_sfnt_off0003c051.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003c051.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003c051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C051 11028 bytes
SHA-256: aba8833987127eeff6f90aeed20aa5fa00627a732869f7518b847b0f7ab6dfa3
font_01_sfnt_off0003d9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D9F6 19668 bytes
SHA-256: f281e28e80f0a41abbfcfac0d34a6ac6fa44e3457b31fae7f407d38a45e1e326
font_02_sfnt_off00040ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40DDD 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off000424f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x424F5 4932 bytes
SHA-256: 40630bc094058213d8c35018bfb4c60414f449a47078eec3e0ed2d3a004858e2