Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6902d180776695…

MALICIOUS

PDF

59.5 KB Created: 2020-11-18 02:56:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47639043029b8b431db4e21f1bfa5b99 SHA-1: d4f592b4ba99a588332243ebe720e6b2f0a73b50 SHA-256: 1e6902d180776695bbf076ba8a1ca84739a555d8c30666c14425c6a6d15d8c08
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to 'traffking.ru', suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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
  • 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=varathane+ezv+floor+sander+parts
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5faa346ee817f.pdf
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/30074.pdf
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/pemup.pdf
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/rezepuwowuzo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/befevifa/sql_server_management_studio_17._2.pdf
    • https://s3.amazonaws.com/leguvefu/lol_client_in_korean.pdf
    • https://s3.amazonaws.com/vososasoxumete/orange_baboon_tarantula_care_sheet.pdf
    • https://s3.amazonaws.com/kewuxejikiwe/dabesexumadipogod.pdf
    • https://s3.amazonaws.com/gezetega/44946147922.pdf
    • https://s3.amazonaws.com/kavugusepe/zobifumuxasefutuwudem.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_off0000ad36.bin
da0ea554287ee696efde7882652ffeffda1c64e71c1e9eb3b4e89f388084bd97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD36 5204 bytes
font_01_sfnt_off0000befa.bin
b30bcd220f72f08c730d8a63f723b3a0a532bcb7b2f1333ee3c43b05a75b7b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFA 10276 bytes

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