Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e80f25c2e009d21…

MALICIOUS

PDF

73.0 KB Created: 2021-03-13 22:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8eaf910443fa88eb6b0f5f00dc06b086 SHA-1: 3263139972e4ad778dc8b2c758b2f67532fdd191 SHA-256: 9e80f25c2e009d21293de7d45aa332d4d995de7888d36f08577d9281f57ec210
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://midufefew.ru/wix?keyword=pokemon+remake+apk+pt+br+2018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366659/normal_60184c4cb0c83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471230/normal_5fff0988ccd24.pdfIn PDF document text
    • http://visemomasa.66ghz.com/83678567333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_601bab0a3fcfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409604/normal_5fcdcf30589ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463803/normal_6043e43f551a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382413/normal_5ff2b9fded329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470689/normal_604cef400f166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501777/normal_5fd1477493eb9.pdfIn PDF document text
    • http://nodozavi.iblogger.org/queen_platform_bed_with_wood_headboard.pdfIn PDF document text
    • http://tivunuvuzamiguj.22web.org/94788758084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454550/normal_6011525ccc873.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kusogit.rf.gd/mabovilitozemosuviforigim.pdfIn PDF document text
    • https://01ff271a-2d66-4e22-ac0f-a796646d2f56.filesusr.com/ugd/8d93e9_13d63e9440c54bbfa235f499aba08d6e.pdf?index=trueIn PDF document text
    • http://miwufojo.epizy.com/31287824047.pdfIn PDF document text
    • http://kugefosames.rf.gd/consumer_reports_monthly_cost.pdfIn PDF document text
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_25ef8925019947ad88ec5365b3beed3a.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_9e853110a6fa4127b282d9ebdb676934.pdf?index=trueIn 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_off0000db91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB91 5480 bytes
SHA-256: a87dc8c81890818d2eae111ea041fa378de5945072112fa734859d337a84ac6c
font_01_sfnt_off0000ee20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE20 12640 bytes
SHA-256: 7628fec26893df111ad8d32502a33f8307839da2c6ebd4a68f621f098d561714

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