Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f9a0b93ceba1a2e…

MALICIOUS

PDF

71.0 KB Created: 2021-03-02 06:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0c496bb25b90bde1096aed4a33110093 SHA-1: 8f52954d7b8602f2421135a42c9bd30a9dd144b9 SHA-256: 3f9a0b93ceba1a2eecc04f777b84f462af64de29e276a3455c786370def16063
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI and a redirector link suggests a phishing or malware distribution attempt, using a product name as a lure. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/strik?utm_term=black+and+decker+40v+lst136w PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453719/normal_60078ecf0d186.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5ff6360239153.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484633/normal_6002d361b0082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387571/normal_6011d512c5761.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/jeJVNfz/movielogy_movie_trivia_games_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fd36a5577595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fc92cc5873c3.pdfIn PDF document text
    • http://viwowiziboso.22web.org/full_marketing_plan_example_ppt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fibonudonug.epizy.com/rodoxemevuri.pdfIn PDF document text
    • http://doxekapop.rf.gd/tadexujirufizasumedaj.pdfIn PDF document text
    • http://jibipadesubamom.epizy.com/dard_bhari_shayari_video_whatsapp.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD870 5800 bytes
SHA-256: 9bdb50eb296f6ae0790e749d6bf03e5ae230062d1312487a4e6da6ab29efcc10
font_01_sfnt_off0000ec58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC58 10300 bytes
SHA-256: 6206fb2c52f041379aed3c291fadd2a166276d1248e8ba58b65c1e614431ca7e

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