Malicious PDF — malware analysis report

Static analysis result for SHA-256 093a760f596372f8…

MALICIOUS

PDF

65.2 KB Created: 2020-11-25 20:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 00a6b9dbd5c23a8624357918e1ecaae2 SHA-1: ba338c9fd6e13971c221f2cd10ae307d0a601387 SHA-256: 093a760f596372f8b62f19df69ea058c59fa0f4e3d1466c7051cb2442be8b01e
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://gettraff.ru/123?utm_term=viore+tv+owner%2527s+manual', is likely used to funnel victims to further malicious content. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', reinforcing its malicious nature.

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://gettraff.ru/123?utm_term=viore+tv+owner%2527s+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5f9d6b35120cd.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/vibuxejelale.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://wefenofutote.weebly.com/uploads/1/3/4/8/134873272/3414651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487894/normal_5fad3863a1ef3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f97552c4eacd.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/dd3e88d04f76.pdfIn PDF document text
    • https://zepixufiguw.weebly.com/uploads/1/3/4/1/134108583/susurewarixagoda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_5f8fcc9f824a1.pdfIn PDF document text
    • https://juleladenoduko.weebly.com/uploads/1/3/4/4/134478401/8630232.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/lomiwexuva/pelegorimevaka.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/24944970369.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/doterra_bergamot_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/aaja_nachle_remix_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/49410029316.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_off0000c351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC351 4984 bytes
SHA-256: 896543d0912f4aac1302e24134edbb184f81314d84ece1d17f4bd4b76d944924
font_01_sfnt_off0000d445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD445 10552 bytes
SHA-256: 641dce3ca585d94c1ac3d56218c0d2d4ff76d8e089a2fd10e2387c230f8bc1a8

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