Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1474ef2a6d56b2f…

MALICIOUS

PDF

61.7 KB Created: 2021-02-10 01:00:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2b4d69cf213344d4dfc6e1daa5a67746 SHA-1: 07a8d0d26808a80029d6623aaa12325c897459aa SHA-256: f1474ef2a6d56b2fb5d0dc67398b5de4288ff609101353c922fbcefb2b7266ad
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=cgp%20as%20level%20chemistry%20aqa%20revision%20guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476925/normal_5fd7c154c15e8.pdfIn PDF document text
    • https://wesulabiduzipu.weebly.com/uploads/1/3/4/2/134235649/87014c1f.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/D3vicgd/gimabemowuvawetokazuka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393204/normal_5fd9c4c9782ce.pdfIn PDF document text
    • https://nuxowodevuj.weebly.com/uploads/1/3/4/6/134609076/2b5c9a5aaf0725.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/gigosiwoded.pdfIn PDF document text
    • https://kozamewibigox.weebly.com/uploads/1/3/0/8/130874388/1dce2303.pdfIn PDF document text
    • https://janepaxe.weebly.com/uploads/1/3/4/0/134097288/befegex-nesidaniwefuvew-tozovapulogufi.pdfIn PDF document text
    • https://wilosobofixi.weebly.com/uploads/1/3/4/8/134858013/zogitejegir.pdfIn PDF document text
    • https://bomazadoxu.weebly.com/uploads/1/3/4/4/134474586/2c6d5cd9872.pdfIn PDF document text
    • https://jujuguzifise.weebly.com/uploads/1/3/5/2/135299578/6f993ed11.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/vopura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425224/normal_5ff516c8313ef.pdfIn PDF document text
    • https://fiferogupinuwa.weebly.com/uploads/1/3/5/3/135306016/5cd9d.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/ojehjcC/new_english_song_video_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366042/normal_6006c8fe57d32.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/0jgXG7h/rts_programska_sema_cetvrtak.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/DJjjSVL/roweguvazexotafa.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_off0000b230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB230 5680 bytes
SHA-256: b6eabf3f3594073abf43e1a51b4e72bff15f7d8580c8bf28a7f68b87cac478c4
font_01_sfnt_off0000c55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55B 10168 bytes
SHA-256: 3b1383f72d0e4b88ed0f86c5dfb3f36f087a99cb45cfa6098125aaf6b27f1f43

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