Malicious PDF — malware analysis report

Static analysis result for SHA-256 972c1dc0508452ab…

MALICIOUS

PDF

86.0 KB Created: 2021-03-17 13:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1966c1109d91e5d42087d91a46df6800 SHA-1: 8005935f0cf4d12da67aa9374549d7da950db604 SHA-256: 972c1dc0508452abec88d319354574ff906cc7d0ca309f7e88d0e1c6f4df88ca
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which is directly associated with a heuristic firing for an external URI. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/wix?keyword=pokemon+sun+and+moon+guide+book+online+free
    • http://particulier-societegenerale.xyz/28090904524dkwgw.pdf
    • http://minuette.me/283755344128jjqy.pdf
    • https://cdn.sqhk.co/senuziker/jejfidC/brick_n_ball_java_game_dedomil.pdf
    • http://particulier-societegenerale.xyz/wuzivurj8wiq.pdf
    • https://cdn-cms.f-static.net/uploads/4501654/normal_604781512615b.pdf
    • https://cdn-cms.f-static.net/uploads/4468261/normal_601d17bfbe2bc.pdf
    • http://bizezodewijezak.22web.org/biological_wastewater_treatment_series_volume_4.pdf
    • http://arbitestpark.xyz/13966567492spt6q.pdf
    • https://cdn-cms.f-static.net/uploads/4375907/normal_602ca3bab2dbc.pdf
    • http://yoptan.space/amazon_prime_not_2_days_anymore_2019ss6pu.pdf
    • http://xuzevofut.22web.org/classifying_triangles_by_angles.pdf
    • https://cdn.sqhk.co/benadujeju/ggqge1c/powuxokimavuw.pdf
    • https://cdn.sqhk.co/reditifotep/dhjgdhe/62200314828.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9539e3d7-93ad-434a-85ac-22bd9bdb82bb.filesusr.com/ugd/df7b34_571799aca07942739d23a5a686a87c02.pdf?index=true
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_15e4df0647d94889995951c1fe20b5af.pdf?index=true
    • http://xegefonupekowa.epizy.com/2013_subaru_wrx_sti_limited_specs.pdf
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_a3c988e831334c53b69b60e797ec24ee.pdf?index=true
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_19926d6d9cf74eeab56f45ed6cc6bcdc.pdf?index=true
    • http://madanekobovuge.epizy.com/biology_miller_and_levine_dragonfly.pdf
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_f0d6b2001e8240888fcd1ce9b836ec32.pdf?index=true
    • https://bed2d873-735b-46bb-a8a3-264d0455df4e.filesusr.com/ugd/03ede2_c102847093cd432fab69ad278e779873.pdf?index=true
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_305c903ba8db4d69a91b354e5eb872e9.pdf?index=true
    • http://wijetifosoxi.epizy.com/duziwaxogifof.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011226.bin
3fb538cd22744217add0e144b14e2a2dd2faef80c025d4ccda0846b8ca272e9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11226 5432 bytes
font_01_sfnt_off00012490.bin
2c3a2be77de6e673fb865c7bc7680aac259fe29d935882528e8510c507515c13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 11276 bytes

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