Malicious PDF — malware analysis report

Static analysis result for SHA-256 20501a49b4538a8a…

MALICIOUS

PDF

81.9 KB Created: 2021-04-30 18:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 47386076a5b621d218e549669d6d9499 SHA-1: 89613712686d5a946de88100e832d0a30e060b60 SHA-256: 20501a49b4538a8a13eb19925bb6078bc147753436f53c4627d9ac7844af7ba1
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it was generated by a tool rather than being a legitimate document.

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://botokaw.ru/strik?utm_term=company+of+heroes+2+cheats+xbox+game+pass PDF link annotation
    • https://cdn.sqhk.co/kepebeso/ehdichg/52051077425.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/kalulot.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/jeigujd/xejefuvejerumifosi.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/hdjdcCX/dowalaxejalaxavatu.pdfIn PDF document text
    • http://0fruits.space/mutualism_commensalism_parasitism_worksheetc2mfm.pdfIn PDF document text
    • http://ritegifufefut.scienceontheweb.net/nuruxagevadike.pdfIn PDF document text
    • https://cdn.sqhk.co/lowanivari/fjchjig/xifuvotiwebizubijosumokat.pdfIn PDF document text
    • https://cdn.sqhk.co/vozofugova/jgeGyhe/slow_motion_video_software_android.pdfIn PDF document text
    • http://prizinsta24.site/kenmore_freezer_door_ajar_switchvur4w.pdfIn PDF document text
    • https://cdn.sqhk.co/seranowe/bvihajc/federalistas_y_centralistas_en_mexico.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/cY4jdNS/restaurante_de_quesos_fundidos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb3952da-caaf-4472-ad00-8d4b41136798/what_age_is_the_series_of_unfortunate_events_books_for.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/capitulo_6b-_2_vocabulary_production_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/pusukefak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec459dd6-89be-42f3-a735-a78cc41cb205/jajaparerovexozegumew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89f176b-3f4d-46a8-93f2-88e4633a6c81/refiwojepasilodolav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a44deb4a-c8c5-4c86-beda-51375cd2478e/52529037754.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EC 5744 bytes
SHA-256: c9b21071212fdf2d5887bd24f9f2aa0fa75a04f980347a197180ca956923c939
font_01_sfnt_off00011561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11561 10740 bytes
SHA-256: 3dfba4a3a7846c06852ba7da09db7fed83bf37c881c5cb8ffaadac34b79ea5f9

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