Malicious PDF — malware analysis report

Static analysis result for SHA-256 db463314612d6de2…

MALICIOUS

PDF

80.2 KB Created: 2021-03-22 02:26:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17489d613965cffd45685c9c7060def0 SHA-1: da3fa7423b262fffd0f87559c773fed9a775e932 SHA-256: db463314612d6de206e6bf758d41c08cf32d1358f5e81ada8e930769ee6d195b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing page disguised as a product listing. ClamAV and ML classifiers identified this file as malicious, specifically a phishing trojan. The presence of an external URI and the overall classification strongly suggest a phishing attack aimed at users searching for specific products.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=dewalt+power+inverter+generator
    • http://zajilakofudo.scienceontheweb.net/bacteria_growth_curve.pdf
    • http://bas-vorota.ru/43730567977ok10d.pdf
    • https://static.s123-cdn-static.com/uploads/4494669/normal_5ff9d1eb18228.pdf
    • http://optalpha.com/the_congress_of_viennas_plan_for_european_peace_worksheet_answersvg3i8.pdf
    • https://cdn-cms.f-static.net/uploads/4479212/normal_60328013c050c.pdf
    • http://omerkatanalp.com/excel_vba_userform_tutorialwiepm.pdf
    • http://jirusulixozome.scienceontheweb.net/pakupunisotetepo.pdf
    • http://love-your-lips.online/96944423236wh3ck.pdf
    • http://allostar.buzz/how_long_can_fleas_live_in_water33n58.pdf
    • http://vostokzapad.su/byu_fall_semester_start_date_20200gl15.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7f3dc8b3-869c-44c5-82eb-14ae88d57796.filesusr.com/ugd/dc4ca1_8c9eb50d4e844cffaf14c78b4abae789.pdf?index=true
    • https://s3.amazonaws.com/punurum/sadapebefalimiguduge.pdf
    • http://gamelaluwer.myartsonline.com/fafije.pdf
    • https://db22a0a0-c6c8-4eb9-9878-037c50d93224.filesusr.com/ugd/e2b5b3_60f624a9dead4dd495bd3b6f43e4034d.pdf?index=true
    • https://s3.amazonaws.com/zazelujeju/c_format_specifier_for_int.pdf
    • http://fawikinego.myartsonline.com/lilogapekesisix.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_off0000ff46.bin
3bfb81bb6dcfdd4fc5e91d77561354303094e6b7d9d26d5ea5868f9b4e200f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF46 4960 bytes
font_01_sfnt_off00011057.bin
4c41cc7cf64bc041b8590ca0240700ce61fb6c12944161db340515d27c7558c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11057 10644 bytes

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