Malicious PDF — malware analysis report

Static analysis result for SHA-256 293b3b22ecf1402f…

MALICIOUS

PDF

66.9 KB Created: 2021-02-26 16:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 27657340d7d9cd509adeb871dc5fbe1f SHA-1: e4236b0a63122e02269503daeda9c41a2383fb4e SHA-256: 293b3b22ecf1402f20d7bf6c84f0adddba3c90f6dd00f545ec8899ad8fc222bc
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://jumiwimov.ru/aws?utm_term=the+black+image+in+the+white+mind PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410194/normal_601ce94b1fb0a.pdfIn PDF document text
    • https://digakope.weebly.com/uploads/1/3/5/9/135974251/82fdb1235e382.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/jgjfxhd/nonogram_color_level_70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443799/normal_5fe8cfd947121.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/rAghjid/gelomigakovisixatosuzoxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368475/normal_5ff79d174cbd9.pdfIn PDF document text
    • http://kostlike.site/poblacion_finita_e_infinita_y_muestr9ej0g.pdfIn PDF document text
    • https://pudabesipewoz.weebly.com/uploads/1/3/0/9/130969441/55a103a2f0a.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/qDjcycJ/luke_bryan_new_song_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389355/normal_5fc6cae6975ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471273/normal_5febe04700b87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402014/normal_602b544ee2fe7.pdfIn PDF document text
    • https://cdn.sqhk.co/matikefateri/mihzdij/rolling_stones_tongue_svg_free.pdfIn PDF document text
    • https://fiziwiminika.weebly.com/uploads/1/3/4/6/134686918/f22b4d61e9f6a.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/ih3vAoQ/temple_run_gameplay_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/hghquhg/rojor.pdfIn PDF document text
    • https://cdn.sqhk.co/teforoke/gcijwR8/radiohead_in_rainbows.pdfIn PDF document text
    • https://dururamud.weebly.com/uploads/1/3/4/8/134846475/nubaxeju.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_off0000c9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F3 5324 bytes
SHA-256: 9abcdbf36e26592c221d9f61b7149ea5ff3a15c95061e1592ef3841e0cc7047c
font_01_sfnt_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 10112 bytes
SHA-256: d413fb3b547eae1a2f02c28a2ae64175fb95649485090376d90807264fefdf71

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