Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f09e4df19349c77…

MALICIOUS

PDF

65.0 KB Created: 2020-11-24 05:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: aee6628a4768301a753dc57d7bf2b264 SHA-1: d492bfae240ad7488ced137f04094a2c06d37044 SHA-256: 6f09e4df19349c779424b7669eac681aa8a57d2bfe24bf5789856bd795df969e
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'traffine.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack, likely leveraging a client-side exploit to achieve its malicious goals.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/strik?utm_term=511+tactical+watch+price In PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/duwiriromiwav.pdfIn PDF document text
    • https://gumelajijepepa.weebly.com/uploads/1/3/4/6/134639918/6196167.pdfIn PDF document text
    • https://nizomepovunamox.weebly.com/uploads/1/3/4/3/134305669/rofurozanu.pdfIn PDF document text
    • https://pagugedupe.weebly.com/uploads/1/3/4/2/134266786/vubekunibakivonoze.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/a36acd2f-2262-4548-b983-3808c89db317/92646751145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b500ee-62c7-4c59-b24b-712bc5c156c3/negativo_y_positivo_numeros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33926dc8-8827-4012-acd5-37f9d4c0d49a/garofalefijojoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37d957f5-855c-4a27-b317-5d96d57c7634/84842805172.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/33063452202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8250156e-13cc-4e9c-87a5-5f02df26942e/maine_college_town_crossword_puzzle_clue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98e8c0e-661f-4d77-bb2c-71c925297321/siwomomofezazimolijuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/foxenoriporobivon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043d9891-aa6f-45bf-96b9-9b5dc8eda4cc/xomemisevonusuxipot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0f1f76b-836a-4f21-aec3-9382385f9f92/welipaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48d85be5-9ed6-4251-a449-0e8dd0110386/dibujanurezorusobodawaza.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_off0000c38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC38D 5016 bytes
SHA-256: 24f2585da405271478f094de9cc484e64deac8763bdc8a3d19b2698a0672878f
font_01_sfnt_off0000d4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B4 10120 bytes
SHA-256: bd34a04482877195eadb708287fee80a0d611da5812b2b1d8b8f40f4b2d6c073

Open this report in the interactive analyzer, or submit your own file for analysis.