Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44f911c2b062755…

MALICIOUS

PDF

85.6 KB Created: 2021-03-13 16:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf2540be5e4be5cefa2269f32a359ccd SHA-1: dbde71fe243eb07f921295dd623d6639b1eabb1f SHA-256: c44f911c2b0627555a5d1263db475cc545a601171ef6351c0ffafb1dbebda6c1
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL disguised as a search result for a technical manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/award?keyword=autonics+tk4s+manual+en+espa%25C3%25B1ol+pdf
    • http://deruvakibifazo.iblogger.org/discuss_the_ethical_issues_in_international_business.pdf
    • http://fewudutizoxom.medianewsonline.com/edtpa_task_3_assessment_commentary_examples.pdf
    • http://xevusezes.medianewsonline.com/53810304701.pdf
    • https://nelixifejesuvol.weebly.com/uploads/1/3/1/4/131406681/taxotepaserowev_wurekufitoji_riwegufapoxix.pdf
    • http://nopotaz.medianewsonline.com/zedaka.pdf
    • https://raponomipa.weebly.com/uploads/1/3/2/6/132681826/pomurazupe.pdf
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/a35f6b6c7a4.pdf
    • https://bonavipopugob.weebly.com/uploads/1/3/2/3/132302892/bokobug.pdf
    • http://vufakitupo.22web.org/5906562934.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/doxifuba/spreadsheet_program_before_excel.pdf
    • https://s3.amazonaws.com/zafirawit/32269959251.pdf
    • http://xadoteditopuse.epizy.com/the_testaments_margaret_atwood_paperback_release_date.pdf
    • http://zozadugaweguj.epizy.com/annual_report_examples_2018.pdf
    • https://uploads.strikinglycdn.com/files/a3ae9fe6-daf8-45bf-9095-8178c1ad6a46/how_to_apply_vinyl_sticker_to_car.pdf
    • https://s3.amazonaws.com/vekodupiwarobi/pipafopemoximadu.pdf
    • https://uploads.strikinglycdn.com/files/ea9b007f-14fa-4ae3-a558-394519f41f58/how_to_charge_playstation_gold_wireless_headset.pdf
    • https://uploads.strikinglycdn.com/files/ed1aa9eb-82d6-4e9a-8c69-a049b0e6efa9/57286475923.pdf
    • https://s3.amazonaws.com/nigimul/76005390204.pdf
    • http://vawerudarasikow.myartsonline.com/what_causes_eczema_on_fingers.pdf
    • http://mitazojumate.epizy.com/78607914516.pdf
    • https://uploads.strikinglycdn.com/files/90f88830-a296-409b-9fff-43c56b714c99/39932400410.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f530.bin
cf01153ec1a1a2260574bccc63319e6aec41799147ddebde2321a4d18d11ed90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF530 5556 bytes
font_01_sfnt_off000107d4.bin
7f0311b69422c387d3f5f194c8eb6a0d02f112c952df65658c5ebfd8cb9fedc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107D4 12032 bytes
font_02_sfnt_off00013003.bin
3a039f7321d313bb4400102e0dd25a8ecf9969fdbd43f2827aed4ca100f544c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13003 16500 bytes

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