Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e2cf5f1de4c0e8…

MALICIOUS

PDF

49.6 KB Created: 2020-11-17 01:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b9ab4e3e414a7fc6b12a315b2b6bafd SHA-1: 4e303dc74cd6629848e798231ba371bdc017e18c SHA-256: 01e2cf5f1de4c0e8cbc4fe60bd1762204254218c0a07249d8cc82355c7eb6a04
212 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection scheme. The primary malicious URL identified is https://cctraff.ru/strik?utm_term=vikings+1.+sezon+altyaz%25C4%25B1, which is likely used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7962

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/strik?utm_term=vikings+1.+sezon+altyaz%25C4%25B1
    • https://vubujoxesawuzar.weebly.com/uploads/1/3/4/4/134476738/dc403da.pdf
    • https://cdn-cms.f-static.net/uploads/4407301/normal_5f94612303769.pdf
    • https://dikosunasalimob.weebly.com/uploads/1/3/4/3/134363034/pagogu-nanuxejakim.pdf
    • https://cdn-cms.f-static.net/uploads/4415964/normal_5fae07ed50423.pdf
    • https://cdn-cms.f-static.net/uploads/4466140/normal_5fb26432ce241.pdf
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f9c743ae5b5b.pdf
    • https://cdn-cms.f-static.net/uploads/4461523/normal_5fab0a2a8c5e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mizeteb/photo_on_resume_or_cover_letter.pdf
    • https://s3.amazonaws.com/kosipefojaw/jowirojux.pdf
    • https://s3.amazonaws.com/jixerubowi/44701180838.pdf
    • https://uploads.strikinglycdn.com/files/79dfa8e6-4fd1-43f4-869b-acbc98ee6b1b/zumupujagedaxadununil.pdf
    • https://s3.amazonaws.com/bakoloj/81981398272.pdf
    • https://uploads.strikinglycdn.com/files/6ce83390-8a5d-4246-bdf2-b048456f34ad/16303583855.pdf
    • https://uploads.strikinglycdn.com/files/8a3369aa-5279-4390-ae83-54caa768f3ed/1414001521.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af14.bin
d5641b8d348a3b592ee0ebefa715fd8d5249e1351a28e1be783567cc331240f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF14 5056 bytes

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