Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3fa543da4f6f4e…

MALICIOUS

PDF

72.5 KB Created: 2020-11-29 09:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 24c1a23ad79602278b052db16f90e77e SHA-1: 9adbbfb236ade8527d1da3bdb4ebcd4a3ed97a8a SHA-256: ad3fa543da4f6f4e942cbc06efe4ea20d639fc01c02acc1274de3c9f713dba9b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://trafficel.ru/aws?utm_term=kennedy+center+awards+hamilton+performance, is likely used to redirect the user to a phishing or malware hosting site. The document body, though heavily obfuscated, contains text related to the 'Kennedy center awards hamilton performance', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=kennedy+center+awards+hamilton+performance PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5fbc887f756fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409254/normal_5f937a0de6252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416660/normal_5f96d8e122a1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450509/normal_5faea9e8b51c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5fa7668ed7d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_5f96e2f593706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f9d764852f2f.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/0f5c045e-2ab5-4813-ae75-d669dafec73e/98708910749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2da5b227-02ec-440c-bec0-fd8b2616e7b1/ffxiv_how_to_play_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafcbdc2-228c-4c82-9ad4-c2973f9a431b/kuludepujezazop.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/67236252298.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/10106196097.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/76803545100.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_off0000df72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF72 5560 bytes
SHA-256: df59ae520770a6ba367858a5733c9bcd4f47087188a68f48f777c8eb0a3b9390
font_01_sfnt_off0000f250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF250 10200 bytes
SHA-256: ef616d3a4fd56652da77cde80e8846cfcfa226498f6cd1713dbbcf73a4aceb62