Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae8b5b36ae66ef6…

MALICIOUS

PDF

64.8 KB Created: 2020-11-24 08:27:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6c090d36cbed7dc4adae871228785bce SHA-1: 7217547f6fc12ebe72f7ec9d6fc723c678ee3edd SHA-256: 1ae8b5b36ae66ef6add9e3fd5b077bf1a33a9279c91ac0532795060850e35389
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a "PDF_SEO_LINK_FARM" indicating a large number of outbound links. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The embedded URL `https://trafffi.ru/123?utm_term=sonic+x+google+docs` is a primary indicator of the attack's direction.

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://trafffi.ru/123?utm_term=sonic+x+google+docs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494435/normal_5fbbb296b982d.pdfIn PDF document text
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/2ee47425a11fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476954/normal_5fadbbb68455c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_5fa4989c3a791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fad45ddcd695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5fa58b5c34d13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_5f966c291f2e2.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/68100a0d-ec17-4cfd-959e-af5f4e16bcbd/ecm_titanium_download_mhh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a2c58a-f0ab-4dca-969d-1087ee1ef561/jesukibuveligewazewofuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f92da4f-9faa-4a9b-9dda-c8a26506264c/62342692209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8c151b8-311e-4d8b-81a0-8c71af9c12d9/23588937003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cebc7ba4-9363-4099-94a9-5e14847d4d18/77475479559.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF6 4972 bytes
SHA-256: 7cf63af8cea69080cc5c7fd2cf8bb9d96b5902d03cbc149945dd3febca3136a9
font_01_sfnt_off0000cef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF9 11344 bytes
SHA-256: 5d63cc3fb8d9d4845bb301552c4158daa29b639b5c2f572f19c4d539a209a6b4

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