Malicious PDF — malware analysis report

Static analysis result for SHA-256 f769e5e002c32ac1…

MALICIOUS

PDF

69.7 KB Created: 2020-11-19 23:35:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ca374687effac7882b43f6009139570c SHA-1: 23a3b5bae4a38a32091ae39a88cab25c9517a476 SHA-256: f769e5e002c32ac17b7191a8c742ddd52014797c3812f4a877e7440c95d5e146
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of outbound links, likely to spread malicious content or improve SEO for malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or a trojan.

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://traffmen.ru/aws?utm_term=canon+camera+connect+app In PDF document text
    • https://rosofofupamufi.weebly.com/uploads/1/3/4/3/134364257/4078213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481397/normal_5fb32d82c4ec3.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/bezotulavutexufikur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464314/normal_5fa237d0230c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410216/normal_5f9ffba15a99e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385887/normal_5f90d14c53846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5faeef4351110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5f9e79580ad27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387716/normal_5f983b8f9e28b.pdfIn PDF document text
    • https://wusunipusu.weebly.com/uploads/1/3/4/3/134320006/4d229eef6cd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415962/normal_5fa0b71a1e0ff.pdfIn PDF document text
    • https://guzebiba.weebly.com/uploads/1/3/4/3/134368687/7414859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411245/normal_5f969adc2fffa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5fa1cdef889f0.pdfIn PDF document text
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/4168029.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54F 4776 bytes
SHA-256: af756c46a827623672a9276a7e64584cbfbb30e1f60e30831981e8079356770f
font_01_sfnt_off0000e56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56E 10628 bytes
SHA-256: 756251340cdf2bac2b4cca5e770d61311a97a44b63f82f421e046dd5e4823abb

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