Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d18f85078f2412f…

MALICIOUS

PDF

76.5 KB Created: 2020-12-29 16:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a01ec83ed14a8521a8203384fd0112ba SHA-1: 8e523dc57b62fb2cd40c34c40d56cdbc017ccebb SHA-256: 6d18f85078f2412fe497e2b7e0e488f870807e81996e3933f33567206bdc6d05
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'traffine.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains references to 'Rockauto auto parts. com' and 'wkhtmltopdf', suggesting a lure to a fake website. No scripts were extracted, but the presence of external URIs and the overall malicious classification strongly indicate a phishing or downloader attack pattern.

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://traffine.ru/strik?utm_term=rockauto+auto+parts.+com PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4493600/normal_5fe8879570e84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371244/normal_5fc7f7e3291c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5fad44b5aa98e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5f90681168967.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473938/normal_5fd07924be71c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460465/normal_5fb282eb5f72a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420924/normal_5fcda0ebf2064.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/kotodur/online_answer_sheet_bse_odisha.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/management_consultant_contract_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/stock_inventory_report_odoo.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/animas_river_durango_fishing_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c8ba38-f5da-421e-b78d-6de540776219/74946719192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a60a0fc2-8a81-41d9-b541-2a778d75a9f3/62168795382.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_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 5152 bytes
SHA-256: 082ae74e1ced15466dba3b316c1a57fb2d1746fe303b431ab657b61420d00e89
font_01_sfnt_off00010006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10006 10892 bytes
SHA-256: 5d01cf54e53cedf1dbb913633feebafebb71c8b88627b7ba61d2e8f4ab9d2a5d