Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deda2c70a931bdf…

MALICIOUS

PDF

71.7 KB Created: 2020-12-27 22:35:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6cf86964e0fca991e42a6d784a6ffbc8 SHA-1: 6b9fdfa980abf20783139ae0de49b92ce40efceb SHA-256: 7deda2c70a931bdf41301cff2b46b0d536dd89bf0bf2b5f9c8904f90f985950c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'trafffe.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?utm_term=date+format+in+crystal+report+parameter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5fbc84408f682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445881/normal_5fad74f4dd08d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369191/normal_5fda70841cf7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_5fa8f3c29abb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391649/normal_5fbf4d99b2988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410191/normal_5fd18bece93e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463306/normal_5fab193f388e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418968/normal_5fb45b5ada94b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5fbbcc4ff2015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393883/normal_5fd3af0f95b69.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/9c746729-fc90-4e6b-83b7-d7d0f3505ace/judekirij.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/nosurijenabor.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/zuzobekalaserobezupom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40808b3d-27a8-4350-9b04-3064add17e5c/minumeb.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_off0000d9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C3 5260 bytes
SHA-256: 587e367ae2e14361caf6626a18921fc4f225296e6414c85106c8d30a945c707e
font_01_sfnt_off0000ebaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAA 11372 bytes
SHA-256: 992d76e0baf5144c333899edcb4360911caf092add83260f7fb7db11cbf9342e