Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be1b7d06ea24c60…

MALICIOUS

PDF

71.9 KB Created: 2020-11-11 02:57:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f0a0d7b83b48e273bb1592766d78109b SHA-1: 2e781507fac169a53b04e02c7eb2ef04cfa4d253 SHA-256: 3be1b7d06ea24c606c3743ca747dc944bc7dbb53762e1fbf8657c0a58c703d4c
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?keyword=tradelands+wiki+xp PDF link annotation
    • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/razavipo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420927/normal_5f99c1503513c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5fa8db13c049b.pdfIn PDF document text
    • https://dafanifupo.weebly.com/uploads/1/3/4/6/134645493/jubedaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_5f8deffeca242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5f99afe01c57d.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/ganijorobi.pdfIn PDF document text
    • https://bexizenibumux.weebly.com/uploads/1/3/4/4/134481127/kewatuwamidebodupel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5f8d8ec699464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_5f95c27424a49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/650f32aa-0d2b-47e2-9f12-52fdbfcc8810/biburatolab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b6b5e34-7ca4-47d3-b4f1-08ae4a1660ba/1973639796.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/15702042450.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4f27da6-6716-4fc3-a7b9-8f1bec022f93/11084517632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05f4fa68-ab2f-415d-a10f-364d864cc5b0/wonojabuvigalarapogonuman.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_off0000dbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB4 5124 bytes
SHA-256: c78312585b529b397426cf05019fea62ab26e23f5b8e2c729e4cc8e54e9b3523
font_01_sfnt_off0000ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 11128 bytes
SHA-256: fe486236b03f6825a14d56db9fc855ce417e39e26e20ea53e57bd481d522cc6c

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