Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c97ac6a2b8831ab…

MALICIOUS

PDF

40.6 KB Created: 2020-12-11 06:59:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 94318dcecc4b064e0495e490a3118f55 SHA-1: 7cc5b952cabf2e6df49800079a4605f98a7c55f1 SHA-256: 7c97ac6a2b8831ab67a7a219646c36dc3132c42d2e898aa66ad38a75ceaa9bfd
262 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains a large number of external links, many pointing to disposable hosting, and a primary link to a known malicious redirector infrastructure. The document body is heavily obfuscated, suggesting an attempt to hide malicious content, and the overall structure indicates it's designed to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8020

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://cctraff.ru/aws?utm_term=osa+applied+optics+template In PDF document text
    • https://nenopejir.weebly.com/uploads/1/3/4/6/134603535/wovoz.pdfIn PDF document text
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/d70cc.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/9b2e47ce76e22da.pdfIn PDF document text
    • https://rukinedofixod.weebly.com/uploads/1/3/4/3/134348838/170c1.pdfIn PDF document text
    • https://denibemexe.weebly.com/uploads/1/3/4/5/134597338/korenowubesaxewi.pdfIn PDF document text
    • https://jevakotimafunu.weebly.com/uploads/1/3/4/8/134878594/6887289.pdfIn PDF document text
    • https://mosawowogan.weebly.com/uploads/1/3/4/5/134511341/ec878f0ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487916/normal_5fcc8cd950cb8.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/6182884.pdfIn PDF document text
    • https://xogedanubukojoj.weebly.com/uploads/1/3/4/4/134491538/befovipepediwaju.pdfIn PDF document text
    • https://tafuposavibado.weebly.com/uploads/1/3/4/0/134017079/51d6aba1feddc6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_5fb9fae4d1409.pdfIn PDF document text
    • https://vosuwuzede.weebly.com/uploads/1/3/4/7/134743003/5f0fe3428847c84.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/getojavopubifumezajesezi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe189b4f98375720a8884d/1606293663286/lords_and_castles_mod_apk_rexdl.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/70509632290.pdfIn PDF document text

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