Malicious PDF — malware analysis report

Static analysis result for SHA-256 da569a43fbb8127c…

MALICIOUS

PDF

81.7 KB Created: 2021-02-21 15:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b0d1bb40e668175a88f7989e0a2cee97 SHA-1: 5f9c25dd8934a3f248878182605c3069ba28879d SHA-256: da569a43fbb8127c15eeb6038eb98502d8148c7362dade651729f8c94d4d0e0d
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/wb?keyword=what%20tools%20are%20necessary%20for%20woodworking PDF link annotation
    • https://cdn.sqhk.co/merodobiweve/igfJjdx/66320929941.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/hgbAVjc/wofizunasikujonopodi.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/gi4ym73/rubuxinamomakuta.pdfIn PDF document text
    • http://teren.fun/btd_battles_hacked_accountf11mj.pdfIn PDF document text
    • http://circus.market/automatic_gun_sound_effects_free7llu3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_5fea02a27450e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489848/normal_600223b39f4fe.pdfIn PDF document text
    • http://genusttwsr.fun/upsc_answer_sheet_formattiym9.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/Hgcczih/how_to_make_origami_heart_step_by_step.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420600/normal_600f59b7ee57d.pdfIn PDF document text
    • http://idealica-it.website/acas_disciplinary_meeting_template8u0pk.pdfIn PDF document text
    • http://itravelimpressions.com/kft_test_report_format3p2nj.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/TFIDja5/s._h._i._e._l._d._lmd_meaning.pdfIn PDF document text
    • http://lnstagramsupportlives.com/kilipozilenakimofagepadiwd5e0p.pdfIn PDF document text
    • http://makamar.tech/2414340049664cgh.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_off0001016f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 5556 bytes
SHA-256: 0ec4148f934c315966d1456a1d3322290f72e5da7548b61c96f64eadc46ef181
font_01_sfnt_off0001146e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146E 11028 bytes
SHA-256: e9f6e10e81370b385fc11f84bce39ab530e914e116a47ec7c21f11dbc327d35f