Malicious PDF — malware analysis report

Static analysis result for SHA-256 293694d96dfa2752…

MALICIOUS

PDF

128.8 KB Created: 2021-01-25 09:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 64ac0cd3425c5896a776a7203193b0c5 SHA-1: 9a022f7140d8d2b4cf53507ad74779f21ecfffc4 SHA-256: 293694d96dfa2752619272c9470370e2313a971fb19f04f11b3ead1f0feeedad
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier further indicate malicious intent. Although no scripts were extracted, the presence of numerous external URLs points towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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.
  • 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://trafftec.ru/123?utm_term=illinois+nurse+practice+act+crna PDF link annotation
    • http://rodsfish.club/5_interesting_facts_about_marseille_francekb28w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388282/normal_5fced68e9197a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501998/normal_5ff15054e7f0d.pdfIn PDF document text
    • https://cdn.sqhk.co/sixajuzap/fjeOgdN/ginodowefarexusinazudo.pdfIn PDF document text
    • http://mybestchan.online/120215317336opts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501029/normal_5fd6795904571.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393624/normal_5fceff541ee75.pdfIn PDF document text
    • http://lisolu.org/word_calm_answers_level_87xuxm2.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/sipelobujusuxul-pivibixogiz-xewaf.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/tiluwisulepam/47386490543.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/32380076995.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/61553047838.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/baillie_gifford_american_fund_performance.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 6

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_off0001bfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFE6 4864 bytes
SHA-256: 902dea0b73a780004f4cda88143bebef8aabdb05797aa87c6a773ed6151cdb72
font_01_sfnt_off0001d07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D07B 11112 bytes
SHA-256: a4e91f64130e8745b0d3e382ab12397a004a43911b822d561a528a248d6b89dd

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