Malicious PDF — malware analysis report

Static analysis result for SHA-256 2151fa95dcb00669…

MALICIOUS

PDF

79.4 KB Created: 2021-02-12 10:38:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e53e730fe920be1d200ff4b38e7ed16c SHA-1: dd748d15bea30665d0da7a2f37e9ea81f1ef6e3a SHA-256: 2151fa95dcb00669ba413941e973cce4c0adba6fa5fc37595e71284e5b22024d
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to domains associated with phishing or malware distribution, disguised as a download for a "Clash of Clans hack tool". The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at driving users to malicious sites.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=clash+of+clans+hack+tool+download+for+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420775/normal_5fe25cfe8e246.pdfIn PDF document text
    • http://harmony-market.ru/su_dalgalar_fizikm8i3k.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/20744606261mc24c.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/ijMqegi/dachshund_dog_names_male.pdfIn PDF document text
    • https://cdn.sqhk.co/mokevesin/FEKjeTy/world_of_warships_blitz_mod_apk_free_download.pdfIn PDF document text
    • https://xajekegok.weebly.com/uploads/1/3/3/9/133997321/1c0cb.pdfIn PDF document text
    • https://kimilirakafame.weebly.com/uploads/1/3/4/6/134659192/8524d2.pdfIn PDF document text
    • http://reduslim-ufficialesito.site/effective_presentation_book0vu98.pdfIn PDF document text
    • https://bugevokugado.weebly.com/uploads/1/3/4/8/134870551/2742431.pdfIn PDF document text
    • https://jixisejilikabow.weebly.com/uploads/1/3/4/2/134265892/7282147.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5ff9179929316.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/heiZi1l/dank_tanks_pesticides.pdfIn PDF document text
    • http://tinyurl.hu/4q22/In PDF document text
    • http://tinyurl.hu/4In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/36178935947.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/44622496801.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/reraxufiresop.pdfIn PDF document text
    • http://jipinasin.epizy.com/vaccination_certificate_for_dogs_template.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBA 5168 bytes
SHA-256: f6d15a9177acfd4a2799c1b549f7f7bfeb012054eb249588b5ad3f2b2c9d9a76
font_01_sfnt_off00010d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D57 10344 bytes
SHA-256: 7ea98f76420723e0deb3d2b4fc889bb380bb5a2663b464229e890c913e7ded6c

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