Malicious PDF — malware analysis report

Static analysis result for SHA-256 42047090b34d59a3…

MALICIOUS

PDF

70.4 KB Created: 2021-03-09 10:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 640c076c48f6919f55336134829b28fe SHA-1: f1bfab46917459120a3210d6b4b174702731d680 SHA-256: 42047090b34d59a3789ec3f43ce961a3413a06aca7fbff866f203f25ef6f032e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=bhrashtachar+information+in+marathi+pdf PDF link annotation
    • https://cdn.sqhk.co/goberirud/oDLhelz/51684889038.pdfIn PDF document text
    • https://kawuzuke.weebly.com/uploads/1/3/1/6/131606938/2324801.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417137/normal_5ff5f07dc9c70.pdfIn PDF document text
    • https://weralafopibobal.weebly.com/uploads/1/3/4/3/134338927/6572377.pdfIn PDF document text
    • https://cdn.sqhk.co/guranotup/jW95igc/train_taxi_apk_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485943/normal_6031abddf0a0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443594/normal_601daba1ca191.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/ghfDwje/ponekadotijobexidew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390328/normal_5ff97c2b1f90c.pdfIn PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/lakisi_bonugufomugotof_zuvudakow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fd6c6f9188ae.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/ieykhae/henry_ford_assembly_line_primary_source.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428335/normal_5fc5f31b4c891.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/joigigq/2018_men_s_world_cup_soccer_teams.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448539/normal_5feefc1552b11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_95cdc9cc10994e8b9894606696b2eeb3.pdf?index=trueIn PDF document text
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_f0813b610d0e47fd87304caee52e8a70.pdf?index=trueIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_10614f5142f340fa9e9c8dd807803464.pdf?index=trueIn PDF document text
    • https://89e1056b-8c01-44a4-bea5-a80a497d444f.filesusr.com/ugd/6db6f7_12b8874381524d48b2dc45b7f391d668.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/timituvupame/93386049617.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/how_is_banquo_presented_in_macbeth.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_off0000d6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FF 5412 bytes
SHA-256: 35ad7714ea35104c65ce654f36afb7f19ce79430b1853fdef73e35198fec4602
font_01_sfnt_off0000e93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93C 10224 bytes
SHA-256: 917b23cb03cddfdb1a2e6ea2601db442318a39ba3fd8090a171a13ab6d1fa36f

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