Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d0c3f402535420…

MALICIOUS

PDF

72.2 KB Created: 2021-02-11 15:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0abc087583974c213c2891ad2644adb5 SHA-1: 0e086ededdf080b5b07b9690c7a1763580b8f856 SHA-256: 17d0c3f4025354209468cd50a0d50d1b0c92a88dd12330fbb46129d8caa2b6ac
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://leonvi.ru/wb?keyword=clattanoia%20sheet%20music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366366/normal_60111f64053bb.pdfIn PDF document text
    • https://jowovodepavilim.weebly.com/uploads/1/3/4/6/134651336/548467c3c5efddb.pdfIn PDF document text
    • https://noxijinijomud.weebly.com/uploads/1/3/4/7/134746703/7884639419a60.pdfIn PDF document text
    • https://kipunazumalimak.weebly.com/uploads/1/3/4/7/134755782/1e417a85e.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/YQqMvTB/pop_music_2019_mp3_download.pdfIn PDF document text
    • http://lidzadva.xyz/dasipaldesng.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/Vibhek6/zedewatetiwemotaro.pdfIn PDF document text
    • https://govodiroruje.weebly.com/uploads/1/3/0/7/130775462/lijaselajep.pdfIn PDF document text
    • http://beamorem.com/brevan_howard_master_fund_limited_annual_reportfo671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408460/normal_60058079b6f6c.pdfIn PDF document text
    • https://telabafulux.weebly.com/uploads/1/3/0/9/130969700/7a67ffc8eaf8f.pdfIn PDF document text
    • https://cdn.sqhk.co/nokulebepoba/bxFvHb1/siwefukoziferetewiwiganir.pdfIn PDF document text
    • http://all-system7.work/12_months_of_the_year_worksheetifb3s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/14991856960.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/chest_guidelines_dvt_prophylaxis_knee_replacement.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_off0000df42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF42 4848 bytes
SHA-256: 1354abd12cf4916db0985eb1cabc6176df658f0dd98411adc5651ca34d81be20
font_01_sfnt_off0000ef91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF91 11188 bytes
SHA-256: ff45d1518b49e12174ea223cc7dd6e3acf4806e1e4ca7abe1492dc2a4d194a88