Malicious PDF — malware analysis report

Static analysis result for SHA-256 c286f48f7d80768a…

MALICIOUS

PDF

91.7 KB Created: 2021-05-25 06:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82b413f9923130a64e245e8b2b086e3e SHA-1: b6bb0a1a6a7c54b4ccc60324d19f778770d18e23 SHA-256: c286f48f7d80768a695714b24ec8dfa03894eddc93b8e65b285e050500f3e8bf
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a resource that is likely malicious, as indicated by the ML classifier and ClamAV detection. The document body, though heavily obfuscated, appears to be a lure related to 'Warhammer 40k kill team rulebook pdf download'. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the malicious intent of directing users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=warhammer+40k+kill+team+rulebook+pdf+download
    • https://cdn-cms.f-static.net/uploads/4417418/normal_601d07367ea5f.pdf
    • https://nisofopirumo.weebly.com/uploads/1/3/4/4/134478351/283fec.pdf
    • https://static.s123-cdn-static.com/uploads/4462046/normal_5fc953baee5b8.pdf
    • https://kawuzuke.weebly.com/uploads/1/3/1/6/131606938/kaxexedi.pdf
    • https://zomuwobab.weebly.com/uploads/1/3/0/8/130873958/23daca4.pdf
    • https://static.s123-cdn-static.com/uploads/4474170/normal_5fdff0546a6eb.pdf
    • https://cdn-cms.f-static.net/uploads/4375890/normal_60372614b20c8.pdf
    • https://cdn-cms.f-static.net/uploads/4450427/normal_6039e13ce0d6a.pdf
    • https://cdn-cms.f-static.net/uploads/4470826/normal_60179df0dd9f0.pdf
    • https://static.s123-cdn-static.com/uploads/4414360/normal_5fe56c280ff25.pdf
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/xerex.pdf
    • https://static.s123-cdn-static.com/uploads/4393028/normal_5fcf7c69a1e35.pdf
    • https://cdn-cms.f-static.net/uploads/4445879/normal_5fd1ee2b17f6a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b519aa7e-7037-4a5d-8e8b-97acd93dffe5/hp_deskjet_3050_wireless_setup_iphone.pdf
    • https://uploads.strikinglycdn.com/files/55251259-2676-43b8-a9fb-bf43b05f3ea9/59354474903.pdf
    • https://s3.amazonaws.com/getizar/how_to_draw_a_dragon_head_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/a8ee84e6-6106-405a-b662-c0c765a60a80/pewopogoreresanu.pdf
    • https://s3.amazonaws.com/petubapizo/76039835399.pdf
    • https://s3.amazonaws.com/poresi/mulinopufe.pdf
    • https://s3.amazonaws.com/fekaduvopigab/mechanical_vibrations_ss_rao_5th.pdf
    • https://s3.amazonaws.com/nowonovege/kojixasowilebidageretak.pdf
    • https://uploads.strikinglycdn.com/files/2a2976a6-c15a-442f-95ea-b8c756fb58cf/hoover_elite_rewind_plus_wont_turn_on.pdf
    • https://uploads.strikinglycdn.com/files/cddc82b0-4d04-4626-b15d-089691914cbe/is_there_a_ps4_remote_app.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_off00012938.bin
85b13bda61493c01efd91b33450f66f87fa9c402e6f93e071bb8234bc66a4366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12938 5640 bytes
font_01_sfnt_off00013c55.bin
214600ddb5ef38c6af194f2a877aad04bd7b9268e5fb27055e3ed0df3da2a8fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C55 10868 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.