Malicious PDF — malware analysis report

Static analysis result for SHA-256 11020184eebaed88…

MALICIOUS

PDF

63.0 KB Created: 2020-12-02 08:21:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e8a8a0c4a0d41f982b3c439d83396ba2 SHA-1: d3af5b653fd2a9a5ff52184f3eab5d7ae3450a64 SHA-256: 11020184eebaed88f202f18e2013c4e8bdd2d9a371a6b8c417c15a91190faab5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafficel.ru/strik?utm_term=cydia+apk+android PDF link annotation
    • https://tugigoboz.weebly.com/uploads/1/3/4/4/134499705/leterikekim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474205/normal_5fad950a2c10b.pdfIn PDF document text
    • https://seforurusux.weebly.com/uploads/1/3/4/1/134131879/1408241.pdfIn PDF document text
    • https://ponutafozo.weebly.com/uploads/1/3/4/7/134705240/wezizukilagesaw-damukapumetus.pdfIn PDF document text
    • https://nurituxokel.weebly.com/uploads/1/3/4/8/134849265/dufawesuselokos_kojewuwevop.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/kilomagome.pdfIn PDF document text
    • https://pafoxewov.weebly.com/uploads/1/3/4/4/134470920/zerotiki_farupikesizu.pdfIn PDF document text
    • https://nibobesexetew.weebly.com/uploads/1/3/4/2/134266191/wafezizoxox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf8952dd96f5918b3fcad/1606285466859/lithia_redding_service_hours.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc383e42cf09257bd7c65aa/t/5fc6ce7856cd4459b3a4a5ec/1606864504978/6123472786.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae84085bf90c0e029602/t/5fc316029ee0f32b87b8da88/1606620674810/sodibazemosivewi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7235687f52b6b817f64/t/5fc5368b9b1ed03538866aa9/1606760079420/historias_de_reflexion_para_jovenes_cortas.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_off0000bc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC42 4812 bytes
SHA-256: 102be2b92dc693a2bd2bc3fdfd4feb13539622755d6246c87068a11b812eac59
font_01_sfnt_off0000ccb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB6 10296 bytes
SHA-256: 7f6a8f287fd510c608e8aafa1fb11136ce0bf60abebf9cb76fa556ee16b629cf

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