Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b365deac7937635…

MALICIOUS

PDF

64.2 KB Created: 2020-12-23 09:36:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fde81e29f1cf6ade467705b584a09c7c SHA-1: 02edb342f93cfd5e810cbce73aca3e7be795b4c8 SHA-256: 7b365deac79376358b801f1085f7f9541f79cede3deb422a6313f2a36c340a34
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://trafffe.ru/aws?utm_term=free+printable+spa+gift+certificate+template', is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to gift certificates, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=free+printable+spa+gift+certificate+template
    • https://static.s123-cdn-static.com/uploads/4490274/normal_5fd04d8aed004.pdf
    • https://cdn-cms.f-static.net/uploads/4471985/normal_5fdaf7fba5af5.pdf
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5fc692a82c490.pdf
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5fb791e3b4868.pdf
    • https://static.s123-cdn-static.com/uploads/4478688/normal_5fc7025a7a73f.pdf
    • https://cdn-cms.f-static.net/uploads/4368950/normal_5fafd88bd6cbf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc4c3d0a5bc066edfbe5dc3/t/5fc6c5775060c93fcd681028/1606862199819/dudus.pdf
    • https://static1.squarespace.com/static/5fdc9bbe50f46d6500014148/t/5fdce94f02a295697cd30ae5/1608313168499/personal_information_worksheet_free.pdf
    • https://s3.amazonaws.com/xonobijikivo/service_marketplace_app_template.pdf
    • https://s3.amazonaws.com/jezaxojipevu/85594399088.pdf
    • https://s3.amazonaws.com/nitidadufetenu/thanksgiving_math_worksheets_for_pre-_k.pdf
    • https://s3.amazonaws.com/kubafezin/vukojesuvojajexiv.pdf
    • https://s3.amazonaws.com/satulibaren/kowivotetokiruwoku.pdf
    • https://uploads.strikinglycdn.com/files/c7eec837-3bec-47d1-b8c1-f1eeb70585c7/xurokasoxape.pdf
    • https://s3.amazonaws.com/muvarelo/fundamentals_of_communication_systems_solutions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfbb.bin
c552211fd5927e524ee871b8cc6656845836fc9cf8cc2c1d0a76dd9618ec456a
pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBB 5432 bytes
font_01_sfnt_off0000d221.bin
c1ce6d1dcd5b935f6d3ffd85e9f9c73e7561c7d3a2510f666ed585d9fedfc490
pdf-font-stream PDF embedded font (sfnt) at offset 0xD221 9920 bytes