Malicious PDF — malware analysis report

Static analysis result for SHA-256 af20e30cba49c845…

MALICIOUS

PDF

72.2 KB Created: 2021-09-10 19:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 8934766fda186760606a7c1629cb4453 SHA-1: 8215831838e61d909fea0879196fef8bd9fc3812 SHA-256: af20e30cba49c845eca6e62c79879ac916f2a2f817c72260235fb94b7d598e29
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://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b177b2f545009200442104ac3706c365/lamizegulonili.pdf In PDF document text
    • http://massarentearchitettura.com/userfiles/files/kiver.pdfIn PDF document text
    • http://geoman.cz/data/file/20440496045.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/zajadegirusajolovefe.pdfIn PDF document text
    • http://kapfenberger-schuetzenverein.at/userfiles/file/93316841336.pdfIn PDF document text
    • https://shatalarab-llc.net/userfiles/files/kamepirudorefalusol.pdfIn PDF document text
    • https://kamarkosong.com/contents/files/devajinuxox.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/60386028804.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/92921626351.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/batigakaboridiw.pdfIn PDF document text
    • http://haphadoor.com/upload/files/95565716629.pdfIn PDF document text
    • http://ping-property.com/user_img/files/sezufivajizijos.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/91485802725.pdfIn PDF document text
    • http://mazraeir.com/images/upload/files/43689381570.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/gawaf.pdfIn PDF document text
    • http://blekinge.boj.se/uploads/userfiles/files/4220563274.pdfIn PDF document text
    • http://sgrappresentanze.eu/userfiles/files/kijoto.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/jedojikefamenok.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1613713c425651---jugevilowirusapef.pdfIn PDF document text
    • http://megaprestige.ru/uploads/files/36809471148.pdfIn PDF document text
    • http://engineersclasses4competition.com/files/others/zakepobitixofopapifugelal.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612edf26586fc---besekukibuwojozozubidog.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/2131410715.pdfIn PDF document text
    • http://otohyundaidanang.com/uploads/image/files/fedujexazogabo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=flight+radar+apkPDF 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 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_off0000bb51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB51 16020 bytes
SHA-256: 85baef04f65a7f8933d42c3859a239d32054988200f8fc930cb10f064a2f1ee5
font_01_sfnt_off0000e463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 10216 bytes
SHA-256: b9a96446bfe0f1be8409162465a00d96d3e69dbe5676a42f2a27ed8a8492ea04
font_02_sfnt_off0000fb21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1