Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a06f35e051df9a…

MALICIOUS

PDF

65.5 KB Created: 2020-11-19 20:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef248c6ebc8ff1a75006d244e3f52a3c SHA-1: 1464abb027cbf30a8707701483fa803ced685472 SHA-256: 07a06f35e051df9a89160d0135a9069c2374f49d45dfa79f5e918b124d0e81ef
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 at 'traffmen.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded links are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=the+five+love+languages+book+deposit
    • https://cdn-cms.f-static.net/uploads/4500417/normal_5fb3441227bf8.pdf
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/sadenukifirew_tiloxisu_gujesovijagux_jazuvubusawolo.pdf
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fb3056f6ff58.pdf
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f8bc801d2053.pdf
    • https://cdn-cms.f-static.net/uploads/4446925/normal_5faf59dc1f7a0.pdf
    • https://laverikiwife.weebly.com/uploads/1/3/4/5/134502667/4004344.pdf
    • https://cdn-cms.f-static.net/uploads/4411682/normal_5fa047ff79b96.pdf
    • https://zedafirulatako.weebly.com/uploads/1/3/4/5/134584693/nakij.pdf
    • https://cdn-cms.f-static.net/uploads/4475582/normal_5fa7aa3886657.pdf
    • https://fivilogavizizov.weebly.com/uploads/1/3/4/4/134446089/395598.pdf
    • https://cdn-cms.f-static.net/uploads/4478670/normal_5fb489ef85164.pdf
    • https://cdn-cms.f-static.net/uploads/4387566/normal_5fa6eb8f93f27.pdf
    • https://cdn-cms.f-static.net/uploads/4459623/normal_5fa9a9a169028.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8c009362-4a64-46e4-9cbb-15f4b533fd25/dibitekuxewitor.pdf
    • https://uploads.strikinglycdn.com/files/20df566d-a550-454b-b9aa-10a913ca67a8/75968146003.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c17a.bin
de8ded4734d3c3f6139a989b8cc650337b789afceb53be635ff5d1260e095c0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC17A 5420 bytes
font_01_sfnt_off0000d3f1.bin
6446d9ea68c7c5261f045cc3485a7bb3dd6cfc06e2a5de37a03a02ecb5dc50c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F1 10988 bytes

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