Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ebb7b586396da75…

MALICIOUS

PDF

68.8 KB Created: 2020-11-10 21:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f513e0b2f84880dbf52259cb87128a96 SHA-1: 15e145a41017f7de44bd32c7d7b1a8b2ecebed8d SHA-256: 6ebb7b586396da75b6084ac20da6220c7a285558d37c2a448e2ffec13fa6675a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/strik?keyword=2006+nissan+titan+repair+manual'. This URL is likely used to lure victims into downloading further malware or phishing for credentials. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing and redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://traffking.ru/strik?keyword=2006+nissan+titan+repair+manual In PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/fokusabalez.pdfIn PDF document text
    • https://zumutunamoja.weebly.com/uploads/1/3/4/5/134588160/17cce.pdfIn PDF document text
    • https://nevonanopovew.weebly.com/uploads/1/3/4/3/134335048/2801254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_5fa3172fbf8f3.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/d125d419-b52b-469b-b8c9-c950bd709467/puxevawomevufapinevi.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/88457322526.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/diferenca_entre_texto_expositivo_explicativo_e_argumentativo.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/gufumutoparago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8776333-fea5-4738-b878-a994a4de4180/ditazovi.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_off0000cf99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF99 5300 bytes
SHA-256: 76ce2c013d0bf0ae20bcb2f7c2697444b57590393fa9b42d7edafc82457d600e
font_01_sfnt_off0000e17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 10904 bytes
SHA-256: 41297c1e21e5187cbd746cec4484cb6f0279f8d9c0bdafcafb5bf7e9664fd5ad