Malicious PDF — malware analysis report

Static analysis result for SHA-256 abacedacf37c05f5…

MALICIOUS

PDF

62.5 KB Created: 2020-11-25 10:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c2b87e6b54bd562d6267f840649d4ac8 SHA-1: 96e8d49a10b7dcc9c9b1d827ab81316e45d089d2 SHA-256: abacedacf37c05f53d44ac9493dd949e04f17a46802226f1e918ac2463aa481e
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 0.9992

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
  • 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://gettraff.ru/123?utm_term=proform+740cs+treadmill+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4455178/normal_5fbaffd1a8428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f8ffa0446d75.pdfIn PDF document text
    • https://birisudim.weebly.com/uploads/1/3/4/4/134467091/9ee7d76.pdfIn PDF document text
    • https://lonerunit.weebly.com/uploads/1/3/4/0/134017922/382fcc802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459922/normal_5fafec5e1aee3.pdfIn PDF document text
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/wazepitotutakofotan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3a8d6a58-2771-4c85-8267-77cc7ff5a855/86959592236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91056ea-d9b4-4924-aa2a-62ca554d7884/46731057870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4214d94-0357-41a6-bdea-b3e756e07a06/52687853347.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/72847031271.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ace7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE7 5360 bytes
SHA-256: c456abcb3bac6a1bd2b1c273bfb4169103aede787c355acdb7048fd0edfde596
font_01_sfnt_off0000beff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFF 9536 bytes
SHA-256: d2234b38355b5226a3050a8287336bcdf05683b68c38b39f49d8ab302fda8e63
font_02_sfnt_off0000df40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF40 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3