Malicious PDF — malware analysis report

Static analysis result for SHA-256 b944e15c5f1de9cb…

MALICIOUS

PDF

74.8 KB Created: 2020-11-14 03:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b60c483ec1e2829377b82e44ab057de9 SHA-1: d10fd3c621a517ef2b674383b0eae78548a92299 SHA-256: b944e15c5f1de9cb6915beb4ede0571496bdb6a67654dec84d8c850c376b1543
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/strik?utm_term=pokemon+bloody+platinum+gba+rom+download PDF link annotation
    • https://foxegakadop.weebly.com/uploads/1/3/4/3/134337736/5856830.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/hotmail_emails_going_to_trash.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8217c87-817b-43d2-b749-15a67e252ea2/64765170935.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/19180467066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea4c72f3-10b0-4873-ac14-999d5c0190df/71231923115.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/22715200847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881eefbc-8a7c-4835-a19f-31114b8055c9/sujunijilomum.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/rugelulinusifutur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbcbb50c-be0b-4734-b320-311318f560da/wavepad_sound_editor_5.55_registrati.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/94608833322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c9e4a1-0f20-473b-9015-96fb0b99edbc/demographic_cliff_of_high_school_graduates.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/20965602226.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_off0000e311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE311 5500 bytes
SHA-256: 1e059524de2f2d32aa7a5067a5dc9f1587ec1cda9ee2ff60090ca8d7ca35ef72
font_01_sfnt_off0000f5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CA 12056 bytes
SHA-256: a652d94f1c636c637c77651aeb5208e7550814951085dbbbc2ff7ba0501a554f