Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b9e29da857f23d…

MALICIOUS

PDF

85.6 KB Created: 2021-04-14 03:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fec6f9ec19ea9a5baf7d30a045558a4a SHA-1: 80aa7484235b057e3f8eead6035b0cb8d6a21e1b SHA-256: 64b9e29da857f23d6efdd2135f4c476848aa50588e8cac7f953764e6fd958dc0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 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://bologen.ru/strik?utm_term=dreams+variations+by+langston+hughes+analysis PDF link annotation
    • http://repair-kompov.ru/662650997496w9m.pdfIn PDF document text
    • http://libertinemodels.com/the_rapid_fat_loss_handbooklw8wb.pdfIn PDF document text
    • http://sadovik.me/danajuzesexilozaga8b87k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448976/normal_6022d775c14fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_6011a2f77c348.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376371/normal_5ff666d82eb3d.pdfIn PDF document text
    • http://mazafaka69pussy.online/abhimaan_2016_bengali_movie_mp4pfs4y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420222/normal_60387e556cbfd.pdfIn PDF document text
    • http://xrootunited.com/anime_twist_apke7wxh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_5fe38c0bd1f34.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/64eb2d0a-4d8f-4e79-9298-b4892a29091e/yevgeny_zamyatin_we.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/chemical_bonding_practice_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc5506f0-b66a-4049-b88f-926c12279b5c/junie_b_jones_books_1-28.pdfIn PDF document text
    • https://e8f98835-b194-42a5-b43f-fe2f29920dd6.filesusr.com/ugd/bf650e_dc386dfac39a47e6bffe8fa51c355422.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/5_love_languages_test_free_online_gary_chapman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343a43ef-67c0-43a2-b7ed-071ed5a8f115/90717663204.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/aptoide_tv_mi_box.pdfIn PDF document text
    • https://6346cca1-8be9-442e-91e0-e35201572fa6.filesusr.com/ugd/a8c077_54895fae02244619b8eea18646002755.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b843f5-ed29-46db-af5d-e066a03b6f55/43510942028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a82171d-e55d-4b49-9c23-e83ae08df36b/43603923914.pdfIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_c2b94efdffb74e879519f8af9d303996.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/ambrosia_font_free.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_off00010e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E42 5400 bytes
SHA-256: 1736ae08effb96b4898b914534784893ca78a905153f8bae4ec0286ad59e99a9
font_01_sfnt_off00012082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12082 11284 bytes
SHA-256: 50679f4a2b4e446a0f778b0a99c439f900c2e2986d285f12dc35f23e6fc3f6ea

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