Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b960843e7f5625…

MALICIOUS

PDF

74.9 KB Created: 2021-11-05 09:05:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 0d9ee2b4f564f88f0239752d398c1c74 SHA-1: e2e1491fc70d62ed60bdcae77ed715c81d22b5a3 SHA-256: 72b960843e7f5625ca16e3eef1f3630898e0045cb9d87b220a7786bf13b9fec3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://crewmak.ru/uplcv?utm_term=typeover+in+word PDF link annotation
    • http://studiotecnicoarduini.eu/userfiles/files/8037096135.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/c347fde1942f81b3e8c23ae60705fdda/25364832618.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16163cc6e2f5ff---76350147859.pdfIn PDF document text
    • http://candientu24h.vn/webroot/img/files/13904605082.pdfIn PDF document text
    • http://aesg2edcv.handylover.com/upload/files/muluwen.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/selifeloz.pdfIn PDF document text
    • https://harley.dataroom.tw/upload/files/rirakiwubewodo.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/mobinudav.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614cfe7c43fbd---wevebekefumubawulukupabo.pdfIn PDF document text
    • http://bcslaw.hu/admin/fck_upload/file/vosabalobi.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/55527779209.pdfIn PDF document text
    • http://indianmailbox.com/assets/images/userfiles/files/68394155457.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16137d41a13013---fenonaxaxixudin.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/75809047284.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/30314281995.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1616c0e2a731ad---84050455567.pdfIn PDF document text
    • http://studiodrago.eu/userfiles/files/9280026217.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/49198156983.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/verotawigizud.pdfIn PDF document text
    • https://jungleflightchiangmai.com/Uploads/files/22408115817.pdfIn PDF document text
    • https://alperbehang.nl/userfiles/file/zolezisazega.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/okisekuxijuwiluvemitudeb.pdfIn PDF document text
    • https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/49484871301.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/bolifibosase.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_off0000c23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23C 17520 bytes
SHA-256: 5e86537ea615cb82339205437d2cdfaf7ab922d307cbf768552870822f54368a
font_01_sfnt_off0000ef17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001072e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072E 10140 bytes
SHA-256: aae996b838c6a3a7ee76c5625fc153544acb7f3ec5f4072ef9a39e3a81da68e5