Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c2f30f89a56c6a…

MALICIOUS

PDF

61.3 KB Created: 2020-12-26 01:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25a57abde78e14a83f52c9b361a541fd SHA-1: 280564f59fa0dd582777167a12112cacb1681d69 SHA-256: 68c2f30f89a56c6a1e178524da5646b58ebc513c26220927d648f5ff69ee77ef
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary external URIs, 'https://traffking.ru/strik?utm_term=mx+player+ashram+imdb', is flagged as unknown reputation, suggesting a malicious intent. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9745

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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?utm_term=mx+player+ashram+imdb
    • https://vefarekosisag.weebly.com/uploads/1/3/4/7/134722728/275c4ff7c25cdc0.pdf
    • https://cdn-cms.f-static.net/uploads/4417543/normal_5fa2ee4b100f5.pdf
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f8a61062458c.pdf
    • https://watogovujun.weebly.com/uploads/1/3/4/6/134626060/wexikovi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dofufiri/bapubuxase.pdf
    • https://uploads.strikinglycdn.com/files/4cd06055-9f2d-4604-a4f2-cd68a3a5964c/1601538982.pdf
    • https://uploads.strikinglycdn.com/files/19382bc6-caa7-4f6a-83f9-4df566ae6e82/tebufapimev.pdf
    • https://uploads.strikinglycdn.com/files/65a191ba-2beb-465d-ba5c-d05328258c79/dogom.pdf
    • https://uploads.strikinglycdn.com/files/e71190c9-e28f-4cd8-af0f-55d5fc8a3652/lab_boxer_mix_puppies_for_sale_near_me.pdf
    • https://uploads.strikinglycdn.com/files/701ebd6a-3001-400f-8bd5-1fa6d6647220/nisesax.pdf
    • https://uploads.strikinglycdn.com/files/3d19fc2f-5f4b-4c5c-a169-244b15a304c3/59472611997.pdf
    • https://uploads.strikinglycdn.com/files/b06ee874-2798-4a09-a89a-bb7375671be3/2921442327.pdf
    • https://uploads.strikinglycdn.com/files/6cdedaba-87dc-4bb1-b0db-8af353c0ac87/como_ensear_matematicas_en_el_jardin_gratis.pdf
    • https://s3.amazonaws.com/najipavez/ludavitevivibopopu.pdf
    • https://uploads.strikinglycdn.com/files/a93f117c-ccc4-4a7c-bdc6-68956829558e/xomudamunu.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e402.bin
6626e8192f0c21752cc8bf6c0f1e525d9a8ade046b41a92adaec62e958acce02
pdf-font-stream PDF embedded font (sfnt) at offset 0xE402 5512 bytes