Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c91c6ce4782604…

MALICIOUS

PDF

68.3 KB Created: 2021-01-25 02:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7e2910822b8608bae0b904a732a865e2 SHA-1: 984afef8f0214b16a818a35b590d332152867dba SHA-256: b7c91c6ce4782604d5568d97f81e217437f3dfe188ceefe8ae54cd873b0a13cc
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://seumenha.ru/wb?keyword=service%20projects%20near%20me PDF link annotation
    • https://cdn.sqhk.co/fevivesuxofo/ha6Pmge/blacksmith_tongs_plans.pdfIn PDF document text
    • http://magic-spring.com/mountain_sniper_shooting_game_download_apkhny8y.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/dgilief/73449258818.pdfIn PDF document text
    • https://xowuxuwakewobi.weebly.com/uploads/1/3/4/8/134853014/gikujinozujalibax.pdfIn PDF document text
    • http://normaa-id.com/kiss_movie_ringtones_free_download_telugubg2vt.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/eohagB7/270_two_seventy_us_election_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/woferomot/fMeNbic/dedonutoz.pdfIn PDF document text
    • http://futup.ru/53428184427u66s6.pdfIn PDF document text
    • http://batmbatm.ru/42510719771zbstf.pdfIn PDF document text
    • http://mmmmmme.space/score_counter_javascripthlwnr.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/jumedemimo/46440137573.pdfIn PDF document text
    • http://temekem.epizy.com/95811176078.pdfIn PDF document text
    • http://xivefasojag.epizy.com/43279829569.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/breast_cancer_radiology.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/buildbox_32_bit.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_off0000d00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00A 5288 bytes
SHA-256: 4965bb42f2b4a0f73c48860da93c25a5bce71806d40f825e442cc745df49160a
font_01_sfnt_off0000e1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FA 10176 bytes
SHA-256: 4b392f58379206ca44f80afb3aef03478d6e486b9c5e52a5ad6f32b44e3d62bd