Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eef38ced6b86903…

MALICIOUS

PDF

96.1 KB Created: 2020-12-30 10:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f43c02674806cc900b9cd51334d1c32c SHA-1: 7cf237a67ac129e55d9466be8e84b4dd1d288e28 SHA-256: 2eef38ced6b86903cc9771da8b0838032f17b524710c314422f50b9b9733a679
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing numerous external links, identified as a PDF link farm. One prominent URL, 'https://trafftec.ru/123?utm_term=great+commission+church+of+god', is directly linked to the malicious classification. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=great+commission+church+of+god PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497372/normal_5fdd59e37367b.pdfIn PDF document text
    • https://naziwimirup.weebly.com/uploads/1/3/4/3/134371197/ce8c69da5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410985/normal_5fdfc319d43e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f98cf7aa1fe4.pdfIn PDF document text
    • https://dujeranisijoku.weebly.com/uploads/1/3/0/7/130776063/2043026.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425010/normal_5fddde5680724.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/ace9d8a9-a30b-4da8-9112-b2b4cc35db23/zawepiremoguloraso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53dfc558-427d-4cad-ad89-cff497ee4372/15886812935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6b8228-5a7f-4c17-b2ef-7248d4372c0f/nivejulovinokogij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/473360e7-40ff-4c2b-be4f-6eb1822aebb0/fashion_fantasy_game_free_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d810ecc7-69d0-4d82-b383-0d7d316e1f0f/66490338003.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 8

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_off000139fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139FE 5432 bytes
SHA-256: 8cddbacad112428deb2166a1fad5249519f941af1fd276b3d6398dcf830f9a30
font_01_sfnt_off00014c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4E 11524 bytes
SHA-256: da0efed570e51f2ad1127e0478bcaa830b27fd342957c63963adf6e4152592db

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