Malicious PDF — malware analysis report

Static analysis result for SHA-256 65683f1523ba2272…

MALICIOUS

PDF

88.3 KB Created: 2021-02-24 00:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 299c8d0aa58be7ab9194a78c07ee08b4 SHA-1: e98b648c8c8ffaec9737e7231465fe2a9923ef28 SHA-256: 65683f1523ba22728f0477de02e9a390ea353133e82dbb31aa9b58f038b5291b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating a high probability of maliciousness. The document contains numerous embedded URLs pointing to disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm characteristics indicates an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://bologen.ru/strik?utm_term=focusrite+saffire+pro+40+firewire+audio+interface PDF link annotation
    • http://medicinfo.online/call_of_duty_black_ops_29vfzt.pdfIn PDF document text
    • https://sawebegiwe.weebly.com/uploads/1/3/4/7/134706463/zameniwivug_lalepiwotole_nobed_bixat.pdfIn PDF document text
    • http://hotsales-com.xyz/hunger_games_book_series_listvx4ki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5ff81e714111e.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/fmQCght/canadian_baby_growth_chart_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/wisisatofife/hWkPyeS/0-_100_km_h_to_mph.pdfIn PDF document text
    • http://mon-compte-cmb.best/konivejiwulisxhd9h.pdfIn PDF document text
    • http://good-production17.site/armed_forces_medley_sheet_musiczkk80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465538/normal_602fccde316f6.pdfIn PDF document text
    • http://sportita.fun/my_singer_simple_sewing_machine_keeps_jammingsb2t6.pdfIn PDF document text
    • http://hisgohar.site/peter_lynch_beating_the_streeteb2nw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451970/normal_5ff1cfdae1a75.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/sTgjCFN/albilad_coupon_app.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/rie8hgh/london_travel_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469143/normal_601a4aa8cf3c4.pdfIn PDF document text
    • http://laitlabs.pro/185765574142rq63.pdfIn PDF document text
    • http://vclean-sale.shop/sekuxobubabamejukukuqvh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410727/normal_6032aa1c85c21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fce68bf84c22.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/wamelomobavos-fexoxisikiloma.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/igWgewz/brick_breaker_legend_balls_levels.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481985/normal_5fc82b7096c71.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A98 5396 bytes
SHA-256: 2e2e0979e3c2bf164a52e381628460aac2d798d2a1c6596dc3a4be45896c1b8a
font_01_sfnt_off00012d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1F 11168 bytes
SHA-256: a074848b336cb38ef236338e8b7706dc391b9c35734f0bcbd8b04d6f122724e5

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