Malicious PDF — malware analysis report

Static analysis result for SHA-256 8348df6f0b4653f6…

MALICIOUS

PDF

69.9 KB Created: 2021-03-13 22:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdcfc0420f64ecef2622f7edae3de6dc SHA-1: de9d036ab8868b95ba00b5b07c60960185ad420c SHA-256: 8348df6f0b4653f6bb16695597c3c4aa5e7f9dbb5025cd8fc86be8dc4583edc1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URIs pointing to external websites, suggesting a phishing or credential harvesting attempt. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, indicating the document's primary function is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=we+need+new+names+pdf
    • http://genusadnlo.space/the_anatomy_of_revolutionck3to.pdf
    • https://pezujereg.weebly.com/uploads/1/3/5/3/135349759/sawiwurupivixon.pdf
    • https://litemavokof.weebly.com/uploads/1/3/1/8/131871991/pozidup.pdf
    • http://lisolu.org/joxikenasobivulonakev2ufb1.pdf
    • https://jitegolugitu.weebly.com/uploads/1/3/4/6/134643776/pezanuwuwuj.pdf
    • http://smeh-mif.space/plantain_farming_in_nigerialg6l4.pdf
    • http://dompodklyuch.com/varozolekufiwo0wb3p.pdf
    • http://chambrehub.xyz/30393219751q3id0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/653c89d1-2375-4774-89f6-8bcc64c8d2b5/is_defending_jacob_true.pdf
    • https://uploads.strikinglycdn.com/files/5cbbcd08-ef46-4004-b1ed-3fe39a5ab097/what_does_a_cold_mist_humidifier_do.pdf
    • https://uploads.strikinglycdn.com/files/a20c8bf8-034a-45bc-be1b-2e40b0ec9235/how_to_put_vinyl_letters_on_plastic.pdf
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_b95b2ef763b845afbb14ba251b5f4bd8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/caed52a3-01c8-4378-8bc1-ec7128065d20/compare_and_contrast_the_structure_of_arteries_and_veins_and_arterioles_and_venules.pdf
    • https://s3.amazonaws.com/medaliwifufugel/jelly_roll_morton_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/58b5a74e-87d6-47b3-a4fa-72f867bc5540/los_protocolos_sabios_de_sion_libro_completo_para_descargar_gratis.pdf
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_ae0f80f6429f4c5ba9d889cdcfbd2af9.pdf?index=true
    • https://s3.amazonaws.com/napejaxosinages/kelale.pdf
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_185636ce4b3e4206a724c13287797a8a.pdf?index=true
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_4d15b355b2644adda1c8d0cafb9429a1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/42affd35-c69d-4d87-ad70-76c0edc5b91c/aristotle_physics_book_2_chapter_3.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_off0000d867.bin
d585965da033675212ae7e6283a4cec76cba0513e9ed40c621d76961b4990465		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD867 5164 bytes
font_01_sfnt_off0000ea03.bin
488f787e815da5f1e0c496e18691b250b4e395937ba5ec2838508029b046ee34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA03 9480 bytes

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