Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1afbdb69d6d7dc…

MALICIOUS

PDF

73.7 KB Created: 2021-02-24 04:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ed06e9ed967583922cdb1c7648d4b540 SHA-1: 79bed187ffe0286b2a3774e371e1907894bf1501 SHA-256: cc1afbdb69d6d7dc4ea2edbe9063c76b9d11ac12687b48acf43f15913e9834f7
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains and acting as a link farm, a common tactic for distributing malware or conducting phishing. The presence of external URIs and the link farm heuristic strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jacksth.ru/wix?keyword=4liker+instagram+apkpure PDF link annotation
    • http://fresh-ita.space/69599652563fhuzc.pdfIn PDF document text
    • https://sakafafemowuva.weebly.com/uploads/1/3/4/6/134694971/46dc4c3cab79dd.pdfIn PDF document text
    • http://esclub.info/89749524017bmq3r.pdfIn PDF document text
    • http://copyrightviolationcenters.com/5183134627hculb.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/1328b.pdfIn PDF document text
    • http://homiak.fun/lubijokubevegowawofipomify7vrg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480735/normal_5fd66e1667882.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_5ffaa2cc09ac0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459939/normal_5ff06b6ceb50e.pdfIn PDF document text
    • http://rukozhop-guide.com/sedubavqxgr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367289/normal_6029cd5e96493.pdfIn PDF document text
    • https://vevotudoxis.weebly.com/uploads/1/3/5/3/135313682/ronikirum-sozidozuzopu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381735/normal_602acb832d741.pdfIn PDF document text
    • http://file-id.ru/gofivoxonaji5q0f5.pdfIn PDF document text
    • https://monezoxikaxusoj.weebly.com/uploads/1/3/1/4/131453753/nutewojuxotulo-tojitaxiwuzarup-gamusezax-dobof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/1686757020.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/french_revolution_upsc.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/adventure_time_movie.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 5196 bytes
SHA-256: 482f46a024277cbb329b0aab80e8ce70ff8eee4b60998ecf43fb06f4d49040fa
font_01_sfnt_off0000f626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF626 10408 bytes
SHA-256: e015c479337065b99a32ea1cef8d7ca72b585538fbe028e823f0d1b6f260a73f

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