Malicious PDF — malware analysis report

Static analysis result for SHA-256 279c8cd2b4ce1445…

MALICIOUS

PDF

67.6 KB Created: 2021-02-06 08:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 60b112361cc853a227a20a603fd3150d SHA-1: d5e700041e47011d1d1500f11196c01e306390bc SHA-256: 279c8cd2b4ce1445527ae3cde721c67e71a9599ce5348f8a0f8f2762fe627b01
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, likely to redirect users to malicious content. No scripts were extracted, but the presence of many external URIs suggests the primary attack vector is directing users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9704

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://druttle.ru/aws?utm_term=free+certificate+background+template+word PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4492281/normal_5febf8344eca3.pdfIn PDF document text
    • http://mnogoturov.com/dazewetofudurikinapaynz4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5fea1cb1ba2a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402014/normal_5fce7d63d1afa.pdfIn PDF document text
    • http://texewofe.22web.org/298192385.pdfIn PDF document text
    • http://azorocheat1.xyz/arcademic_skill_builders_math_gamesyqju4.pdfIn PDF document text
    • http://reweder.site/45080155639molun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476270/normal_5fd64de1de84a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453747/normal_5ffe15c4cd85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470027/normal_5fd671fb9b7fe.pdfIn PDF document text
    • https://cdn.sqhk.co/bavisimupux/edNyaha/notepad_plus_plus_plugins.pdfIn PDF document text
    • https://cdn.sqhk.co/rawejefipemi/khhigb2/vuwabunukojubexivusi.pdfIn PDF document text
    • http://montana-media.com/taxelanemi3fd2v.pdfIn PDF document text
    • http://fortuneocredit.com/6124796747836ggg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wedagavuvux.epizy.com/84706792394.pdfIn PDF document text
    • http://lubudag.epizy.com/tupiperisimepuxuj.pdfIn PDF document text
    • http://madukavinoxonal.epizy.com/denticon_user_guide.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F2 5548 bytes
SHA-256: a4abd8bbf14201e2380f1972e4c24a0a77612c3bf77775bd5020f9c7feb73ab3

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