Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17ae93a1cd58415…

MALICIOUS

PDF

70.0 KB Created: 2021-02-18 03:31:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c6e85cf0f7f7f6db3d16d73eb53466e SHA-1: abb22dd150133bb0586978b73269e9628549a3d2 SHA-256: d17ae93a1cd58415c491b56368ea9d049fba007b47bb38adf2c5f5a38e5fd74e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=inflected+endings+definition PDF link annotation
    • https://nadagedo.weebly.com/uploads/1/3/1/8/131858166/1051668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_5fdb10d7edb68.pdfIn PDF document text
    • https://lomameleni.weebly.com/uploads/1/3/4/5/134597964/6574031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_5fc99ab870b9e.pdfIn PDF document text
    • http://sakhavto.ru/jisipaluvupewujizisofqn8cq.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/bghWhdB/waxulazikusidisuz.pdfIn PDF document text
    • https://mojetene.weebly.com/uploads/1/3/5/9/135957439/kufowosurog_fumikexizuk_mekunimakuje_zaruxixazimigol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_6016a6558995a.pdfIn PDF document text
    • https://pekixutub.weebly.com/uploads/1/3/1/4/131453658/b7b918.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/gdCNhfH/bimotaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_60293b46127ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367278/normal_5ff3dfd22d6ea.pdfIn PDF document text
    • https://cdn.sqhk.co/nixagigad/cQigygc/bubble_tea_boba_balls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369626/normal_6001b85e7d45f.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/hnpOmgj/live_stream_for_video_bigo_live_apple.pdfIn PDF document text
    • https://xuxedujuwa.weebly.com/uploads/1/3/5/3/135345360/d52fcf0aa764f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD761 4820 bytes
SHA-256: 159a1a10b9b55b655e7b2365b0ab011788f565e963aab1c4f06fa5b6ad93f097
font_01_sfnt_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 10304 bytes
SHA-256: 27c097549ee8acbb7c273191e45d48efca5f9d245d8882fe762d871a5140fb55