Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6041e2027493f5e…

MALICIOUS

PDF

71.5 KB Created: 2020-12-23 13:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 293ec58954fe1b85d806e92a48b0d81e SHA-1: e9ff95b4f9e3682807f0f0115510c054e1bf0225 SHA-256: e6041e2027493f5e5e9db5819079567b366ab4329ca3b3ffc2b2b3edb5c253c5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to other PDFs, suggesting a link farm or redirection mechanism. The primary URL, traffking.ru, is associated with a lure for 'papers please free download mac', indicating a phishing or malware distribution attempt. ClamAV and ML classifiers strongly indicate maliciousness, likely related to phishing or trojan distribution.

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
  • 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.
  • 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://traffking.ru/strik?utm_term=papers+please+free+download+mac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484632/normal_5fd3b95070b4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426261/normal_5fadfd6d8cc78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495974/normal_5fb53870b2cf5.pdfIn PDF document text
    • https://nimaxosonoj.weebly.com/uploads/1/3/4/8/134897368/voxenuvomujab_sotujoxi_safexol_gobit.pdfIn PDF document text
    • https://vijosiza.weebly.com/uploads/1/3/4/7/134746498/eaf554c4ca5a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5f9a7c89815ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5fbcefb8db723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_5fa92c402aeb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478968/normal_5fe14f4dbfd82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411229/normal_5f9e5e3132dec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8b04ca-98d8-4bcb-bc78-328c328dc2b9/wanted_full_movie_download_in_hindi_dubbed_hollywood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a2e7119-6c5e-49d9-8406-3bb498ca7809/zaxupofufilulitubuverur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b6e9c1-63cf-4c66-8d57-45a5c0eef0ab/94581364094.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_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 5396 bytes
SHA-256: 3bd706e2ffa78864474b43f2fc469daf86c29ffa5b1de3120454329ae7739b5b
font_01_sfnt_off0000ee69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE69 10080 bytes
SHA-256: a578c82f99ef788b2fe4baff504326d6a40642f960c6ddcd6ef68eeb34084c24

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