Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3464f7f8d5c1b87…

MALICIOUS

PDF

65.2 KB Created: 2020-12-03 18:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f2b227ada58fda64d540892b08559b79 SHA-1: eb6a73d3b0856b1d0f5d82a1bd49193181ffb0c3 SHA-256: f3464f7f8d5c1b87d5e1acae32e6fba4865116c8de0c3a5df2691a83016429f6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous external links, suggesting it is part of a link farm or phishing campaign. The primary URL, https://traffset.ru/strik?utm_term=nzxt+s340+instructions, appears to be a lure for users searching for specific product instructions, likely to redirect them to malicious content or collect information.

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://traffset.ru/strik?utm_term=nzxt+s340+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5fad9469a23ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5fbaad515b191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fc82a4344a38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f983e141d861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408324/normal_5fa7dae7d50bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5f8d5ad681caa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5fc818d240e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5f95a7ef91ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8be0d24a382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5f8f1847e0306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422145/normal_5f9a8ddac0fe9.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/aee0e7964b8.pdfIn PDF document text
    • https://nidobafimenute.weebly.com/uploads/1/3/4/5/134526671/bododa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_5f904b88e733b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fb8c2ace9aa3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC117 5032 bytes
SHA-256: eba763fc2d4537dfff4ab0fef7aa9d7a6ffa2a0dd12e7f3fa9ec7bd5f2c89d05
font_01_sfnt_off0000d266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD266 11832 bytes
SHA-256: d1685e8241d2226d4c06973a37cab1c731fe28acc4b9b64ff0c33468281aa226

Open this report in the interactive analyzer, or submit your own file for analysis.