Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ef73b15b6afc2b…

MALICIOUS

PDF

69.9 KB Created: 2021-02-15 21:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72db1921f748e7ff29dce9034752c676 SHA-1: 313d714a3ce321046e145b385218b7a285e068df SHA-256: 60ef73b15b6afc2b3e4e1953f71574d18a599b66c68dea242cd754ebc87121c0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=world+war+1+internet+scavenger+hunt+answers In PDF document text
    • http://sajezexutumesu.iblogger.org/butanebebakidadufefupijoj.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/hfjcAib/build_a_bridge_game_walkthrough.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403404/normal_60109fe282e8b.pdfIn PDF document text
    • https://cdn.sqhk.co/japedovak/vhahfhd/gudiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424376/normal_5ff50eb89b50f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_600dc4e7961b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5fdc62f6c2a03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://doboroguvenuv.epizy.com/apple_music_android_login_problem.pdfIn PDF document text
    • http://bexinoj.epizy.com/16477252633.pdfIn PDF document text
    • http://bogasupi.rf.gd/viva_la_vida_cello_sheet_music_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/eskadron_boots_size_guide.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_off0000d529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD529 5416 bytes
SHA-256: 408392ed7a8ec84307b2a6f52eab07cf1598c51f672f3f1d1e352ad385d43e7d
font_01_sfnt_off0000e7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AF 10276 bytes
SHA-256: c44bfadbb9d848f0b510933da8664925208df0cb299f8001fcc1e152b384de58