Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a59927d7df0c82…

MALICIOUS

PDF

71.8 KB Created: 2021-03-01 17:15:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5a819fdf4fba917de5ecde8630e2c73 SHA-1: 08a07f723104a4f5dca5fd41be515c0bb6447c1a SHA-256: f1a59927d7df0c82644a01a3af385a4bb6f7af3b850addb6b656420e011338e0
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://botokaw.ru/award?keyword=ford+ranger+workshop+manual+download PDF link annotation
    • https://cdn.sqhk.co/zolulesar/iSAgfaS/93993569889.pdfIn PDF document text
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/2240323.pdfIn PDF document text
    • http://uscarins.info/front_page_africa_liberia_current_newstemjo.pdfIn PDF document text
    • https://cdn.sqhk.co/pasezateda/e2jegcr/bouncy_castle_fips_maven.pdfIn PDF document text
    • https://niraniki.weebly.com/uploads/1/3/4/6/134662237/004162f50d03.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/mMdihbv/zelle_chase_business.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/79Gjjjc/71988025657.pdfIn PDF document text
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/6040778.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/i8HQibp/gallery_wall_layout_5_frames.pdfIn PDF document text
    • http://instofficial.online/27358563431mjl5x.pdfIn PDF document text
    • https://nagenexam.weebly.com/uploads/1/3/0/7/130776307/5237474.pdfIn PDF document text
    • https://rewesiriwo.weebly.com/uploads/1/3/4/3/134318955/tovogevorikatetafej.pdfIn PDF document text
    • https://sozatoma.weebly.com/uploads/1/3/4/4/134484551/rusiloxajo-woridotowujusev-fixumewififu-nawaxa.pdfIn PDF document text
    • https://tujurexi.weebly.com/uploads/1/3/4/7/134743655/wovinuzub.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/fosagoba/whatsapp_stickers_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/carl_jung_shadow_projection.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/30162006554.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/zipiludidige.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/44307107159.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_off0000dcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD4 5484 bytes
SHA-256: d84158805a695f2435b4a9dbcaa9225428ded5e846ba526f19c00ec312270e37
font_01_sfnt_off0000ef6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6B 10044 bytes
SHA-256: f0e1a97da81bc4244742ba3da32409b147cddb6ddb7abfd88a1bc19ca5adf2f3