Malicious PDF — malware analysis report

Static analysis result for SHA-256 589c87294cd1a66d…

MALICIOUS

PDF

74.0 KB Created: 2020-12-25 17:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 422f904b98513d0d373f242108d0117d SHA-1: 799cc2454058b74ca0582d0e288908348e473d35 SHA-256: 589c87294cd1a66dd81c7288f949b39d7bcf3e85ede91b90628dfc2a2f8eb19b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of a phishing or redirection scheme. No scripts were extracted, but the presence of the external URI strongly suggests an attempt to lead the user to a malicious site.

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://trafftec.ru/123?utm_term=sennheiser+rs+195+vs+185 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8863fa0ef78.pdfIn PDF document text
    • https://cdn.sqhk.co/vadafepagij/vwhhja5/59888233634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f966141bd7c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370284/normal_5fe3bbbf48573.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvomuvugu/gj1iaih/kickboxing_kingston_upon_thames.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/henghuili-files2/purizo.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/fire_weather_zones_nm.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/famelerogizezipixabemafus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23789e37-2df2-4145-8ec8-e5ef932fc776/pimunapek.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/best_psychology_books_in_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/tizufefuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755d0dce-dc35-4acc-96c8-f7408679ffb7/kinunin.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/ebook_calistenia.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_off0000e6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B2 5220 bytes
SHA-256: 712f77a8c543bd0be48e7c8678cb767a0d0ee5b2b5bbb76438f86db14dd01b70
font_01_sfnt_off0000f87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87D 10324 bytes
SHA-256: b05f63c3a3f85a11799f1682542c9643bca5c8a9ab73425dde7c85f7380076fc