Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6a599568e9747c…

MALICIOUS

PDF

71.4 KB Created: 2020-12-30 09:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 16702485488edf3e1c44a7663b2d5136 SHA-1: b4b30c6f6c56d522b3512751d02ea3ad8db982d2 SHA-256: 9e6a599568e9747c935bc12de510871787a4a7c25c2c4fab0f65f1dff8f2b737
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm designed for SEO manipulation. One prominent URL, 'https://trafficel.ru/123?utm_term=wild+things+3+movie+free+download', indicates a lure for free movie downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=wild+things+3+movie+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466367/normal_5fdf645e6ae6e.pdfIn PDF document text
    • https://rozapalevode.weebly.com/uploads/1/3/4/7/134705228/c074d1156b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f87642c73132.pdfIn PDF document text
    • https://suzulazupe.weebly.com/uploads/1/3/3/9/133997697/8c1a6a09a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_5fa8a3dea1d2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5feb5fd73be4b.pdfIn PDF document text
    • https://vexuneka.weebly.com/uploads/1/3/4/5/134584550/buzelavademamib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401505/normal_5fc89109d3b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408479/normal_5f938aed83482.pdfIn PDF document text
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/jovatunu_kidolematix_dolok_durupari.pdfIn PDF document text
    • https://nulokedebuzeb.weebly.com/uploads/1/3/4/3/134310318/bbe9e14add9.pdfIn PDF document text
    • https://giloxegikejuzun.weebly.com/uploads/1/3/4/7/134712531/6ad9f5820faf31a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/sheridan_700tc_sheets_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/61779068262.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/23820600413.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_off0000d8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F9 5652 bytes
SHA-256: 5838a4f393671b4c0cb1c803b7a1bc706ace47255fe27949c310129f636cd178
font_01_sfnt_off0000ec2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2D 10648 bytes
SHA-256: 523925ba6856e2379d798043ecb52767fb741753f64f5245814c9cecd3de1311

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