Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2020436fe7e8c66…

MALICIOUS

PDF

62.3 KB Created: 2020-11-25 02:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3b50e591c09190f0b9efaa2042215bdb SHA-1: 1cd518b9d977146fc7a082ab5924c8fb09d741e3 SHA-256: a2020436fe7e8c6638d36e0a59489a932a704d7bb8e4f39872907246dce9da17
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt to lure users to malicious infrastructure. The embedded URL `https://traffmen.ru/strik?utm_term=tecknet+mouse+driver+m001` is directly associated with the malicious activity. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest a phishing lure, likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://traffmen.ru/strik?utm_term=tecknet+mouse+driver+m001 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417986/normal_5f9b8e7a1d1d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495686/normal_5fb54f61f02ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5f91bd771348b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f8f4809b1604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8fa28bbde82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f8fcbf0f3bb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480173/normal_5fb605c5caf6a.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/zuguvoxoki/jdh_services_inc.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/fomuru.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/10150843455.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/homecoming_city_of_heroes_server_status.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb04baa8-c75a-49a6-9a10-6b99b5c67ccd/kefoduligenine.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_off0000b803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB803 5108 bytes
SHA-256: a6a97c059ca01746f081cc82b1ed1157d43c6494f8976526a931be4daf0b86c7
font_01_sfnt_off0000c95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95F 10292 bytes
SHA-256: ecc26d44aaa3b37cbd963b9d917daa938aecc34b14316fc8aa6e6cade66f534b