Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e0c4bed4568109…

MALICIOUS

PDF

81.6 KB Created: 2021-03-24 11:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 86b6207acf92009c67fae6e24a6748e2 SHA-1: c50376d78776bb84a01c51cfe24d88971ec3e917 SHA-256: 69e0c4bed45681090c2bf16fbfc66ab8024dcef6977472f45db914c521e4fe29
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=samsung+galaxy+s9+plus+charger+specifications PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490930/normal_6003ab521ee67.pdfIn PDF document text
    • https://cdn.sqhk.co/fojevimexu/WgibDhh/sonic_the_hedgehog_classic_fan_game_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476567/normal_5fe4d665ba3fc.pdfIn PDF document text
    • http://senteber.site/95940437322s3jvl.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/iKkijUE/54143950257.pdfIn PDF document text
    • http://vipmanmarket.space/oster_steamer_replacement_partsqoohj.pdfIn PDF document text
    • http://usechambre.xyz/58463157244mcpqn.pdfIn PDF document text
    • http://adyga.site/modern_english_teaching_methodskm6ou.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/dhaXM4o/stock_car_racing_games.pdfIn PDF document text
    • http://basiditdcf.space/how_to_look_at_a_star_through_a_telescopeo9meg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492246/normal_603eafe6059e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423714/normal_5fe25ff611519.pdfIn PDF document text
    • http://madewithsunshine.com/bezupifux8iqjb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388062/normal_6001380c427f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493245/normal_604e479b2839b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407781/normal_6034dc9f41d9e.pdfIn PDF document text
    • http://clientbluebadge.com/pijukovudumurujeroborepe399ps.pdfIn PDF document text
    • http://roflan.site/apocalypto_full_movie_2006dqw88.pdfIn PDF document text
    • http://shoop-fr.ru/angularjs_form_example_plunkerqfuus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_603002fa5f2da.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_off0000ff89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF89 5856 bytes
SHA-256: 8e59059ce3f55d1eedfca1adfb4a18ea3dc0ff0551a062af652a78e89d675ab2
font_01_sfnt_off0001135f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1135F 11012 bytes
SHA-256: c2cc20c98f915beb7907433ef67b0a55ca5768345f9ecdc5a3531b43678f57b7

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