Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abeae271267a4d9…

MALICIOUS

PDF

153.6 KB Created: 2020-11-11 05:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ad195211b69d2e3333223a639a77fe0b SHA-1: d81251327d275bd150bbbf720551c9529edd3620 SHA-256: 0abeae271267a4d90ce1f6469b4a5353ba13bd17363549ed43c3d5d970a57acd
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?keyword=4815+emperor+blvd+durham+27702 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376382/normal_5f93ecc4613dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_5fa9b922b0ec2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5fa804de837bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5fa3eac9e088b.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/sitok/foviduduvuvovogubet.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/pulexiperobukedusife.pdfIn PDF document text
    • https://s3.amazonaws.com/tipakalif/jurazobaropabamiwibel.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/coordinate_geometry_questions_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1f7ea14-e36d-46dc-be00-40c3fcef78e3/43954761608.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/fiduvemoxobune.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/fortnite_skins_free_for_minecraft_pe.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/relanuvofakelisoxepewi.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_off00021cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21CB3 5936 bytes
SHA-256: 3a8e3fb0be6ce24e5e46312cf888fc908231e1a6e09b95d677a7be029a7e0cef
font_01_sfnt_off000230cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x230CF 11776 bytes
SHA-256: 2e15e26c496de1aa699ee8a4d144601392e9234c5c03eebcdba61650128a6902