Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee1bddc35e06319…

MALICIOUS

PDF

73.1 KB Created: 2020-11-20 13:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e1b4f8fb5348cb2b993b3727b5afd00a SHA-1: 810f316279d9534702f25b4f72a48278315660f3 SHA-256: 0ee1bddc35e063195a361d5b3c25bbabb73ec9026b5e2f002ebed0a04412cb2c
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded links, one of which points to a known malicious redirector at 'traffmen.ru'. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO abuse. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack.

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/123?utm_term=segundo+viaje+misionero+de+pablo+para+ni%25C3%25B1os In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f90665f3048a.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/lusilataviludova.pdfIn PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/keveresubexon_paxijuteror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zewimu/280664174.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/25693777135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1b53d1-e8cd-454e-be77-cfe1914dbdb0/7868632523.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/powerpoint_calendar_template_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/president_trump_press_conference_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76bc0e58-b52f-4422-9aca-0b639a4986b9/fiwinokesanadivejit.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/kikokulirosumabikonufo.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/dabolorukixojes.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/entrepreneurship_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/pukufagep.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AF 5672 bytes
SHA-256: 57da018aca7ef05d837b28e578f0d5646a5131042e62bcf6f7697677df4c030a
font_01_sfnt_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 10932 bytes
SHA-256: 6508d1f3fcea39af305d7653d11645a47916ea58b9837d6cd017f22cb199e630
font_02_sfnt_off0001072c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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