Malicious PDF — malware analysis report

Static analysis result for SHA-256 08012f1e5ba86d12…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 05:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 82423dc36fb7c4d3f98617f9387b45c3 SHA-1: 1ec7b53aadc367c98b1b1ee9889f77a6b5f310e2 SHA-256: 08012f1e5ba86d12681f5c89bde14bab7ae5b48fac97651fe9c603d5cee8b348
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=in+bmv+cdl+manual In PDF document text
    • http://alex-travel.moscow/tbi_pro_humidifier_instructionsbjcga.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/jijam6Y/35752017715.pdfIn PDF document text
    • https://fiwitoritare.weebly.com/uploads/1/3/4/5/134582968/bc1446a.pdfIn PDF document text
    • http://detonic-ufficiale.website/zumazuzulonegirelebimonjkxpm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5fe41b5b925b5.pdfIn PDF document text
    • https://cdn.sqhk.co/felodunom/cYCwiei/code_editor_ide_ubuntu.pdfIn PDF document text
    • https://benipotuwazel.weebly.com/uploads/1/3/4/4/134445242/4b29aea35bf.pdfIn PDF document text
    • http://select-get.top/jozumutudagizofuxukokuytqkr.pdfIn PDF document text
    • https://cdn.sqhk.co/bemememu/wRhh6hb/ink_master_cast_season_12.pdfIn PDF document text
    • http://stavki-na-sport.site/bandook_song_mr_jattlhbub.pdfIn PDF document text
    • https://cdn.sqhk.co/fufeboxeri/fCjbjaA/70734007817.pdfIn PDF document text
    • http://buytoday.cc/kepaneju05oiq.pdfIn PDF document text
    • http://reetodo.online/what_is_compaction_factornswhr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480895/normal_60332d6b9f0f2.pdfIn PDF document text
    • http://qqkaxes.xyz/sean_diaz_life_is_strange4z0vs.pdfIn PDF document text
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/2675423.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/gowupuzokowuxes/how_to_work_woods_timer.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_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 4948 bytes
SHA-256: 888d5d4207bb5bda5bd6e9252102f0d42b2f7909f427dc6f27e554db569c2204
font_01_sfnt_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 10476 bytes
SHA-256: 7dfb0481ece240357283cb8dd66ad2cb43c9ae63ec99da4a4e2c60e8b9a90ba8

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