Malicious PDF — malware analysis report

Static analysis result for SHA-256 7109f9d7001d23d0…

MALICIOUS

PDF

45.7 KB Created: 2020-11-07 05:59:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0e43624f7af1ca828faad0595607f5b8 SHA-1: 6cb79b1bba6904bf6d03c105692e55d814cc79cb SHA-256: 7109f9d7001d23d05735b83cdd03c5a75b716b0fae7f21505c6ec90799b99c92
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafficel.ru/aws?keyword=differences+in+neolithic+and+paleolithic+age PDF link annotation
    • https://xosetumigex.weebly.com/uploads/1/3/4/3/134371377/d44e3d332.pdfIn PDF document text
    • https://xerirexu.weebly.com/uploads/1/3/4/5/134592073/veponoxonagokis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393506/normal_5f9d88fea985b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_5fa0aa4337473.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/gamagisami-weximelemot.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9979808.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/1aff6c6c.pdfIn PDF document text
    • https://nezumise.weebly.com/uploads/1/3/4/2/134265586/9ee06801aa747.pdfIn PDF document text
    • https://dedeluruxizo.weebly.com/uploads/1/3/4/3/134305162/poxezuzixuzulujezem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f200c3c4-d12f-4db3-b0a2-a116f890b63a/34000929392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b53f77-e03a-4ac9-a90d-c1cb4d861ae0/52345665697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88999dc-e5b2-4b66-936a-5a860bf1c040/73778350662.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000655e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655E 5204 bytes
SHA-256: 814d8991cc684b6ffdbbc323bf724ab64e9c6fd1a94024ac80241e79c3f70e80
font_01_sfnt_off00007708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7708 11172 bytes
SHA-256: 99890971beccc098097bb3cc9bfc263680db7d5f1a7b19cc5fc1077f72df3a8f
font_02_sfnt_off00009b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B6E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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