Malicious PDF — malware analysis report

Static analysis result for SHA-256 49eebb0f29824182…

MALICIOUS

PDF

74.8 KB Created: 2020-12-28 22:17:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebc03599e4cd65f2f056b843343e9eda SHA-1: 64a1646f8c10f93ae78bffd1f81841ceda7edbd2 SHA-256: 49eebb0f29824182e69cb7153870efe2f69d9d8057dcc62db7e3c1e467590075
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting sites, a tactic often used in phishing or scam campaigns to obscure malicious destinations. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicates this malicious intent. While no scripts were extracted, the structure and URL patterns suggest a phishing or scam lure, likely intended to trick users into downloading unwanted software or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/strik?utm_term=temple+endless+magic+run+3d+download
    • https://static.s123-cdn-static.com/uploads/4403806/normal_5fc849574ae64.pdf
    • https://bafalado.weebly.com/uploads/1/3/4/8/134865771/ac81952.pdf
    • https://wafubimuzev.weebly.com/uploads/1/3/4/8/134869603/1f3841c7c3c2d.pdf
    • https://static.s123-cdn-static.com/uploads/4488822/normal_5fc53c50618e0.pdf
    • https://wiworixoso.weebly.com/uploads/1/3/4/3/134321663/7707606.pdf
    • https://cdn-cms.f-static.net/uploads/4470980/normal_5fa9d57c3ce7d.pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fb5620624bfb.pdf
    • https://roxomutina.weebly.com/uploads/1/3/4/6/134663133/zusabutevafu_wibosote_vovekit.pdf
    • https://cdn-cms.f-static.net/uploads/4424330/normal_5fa1eb9b862a2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4b44f99d-cbcb-45e7-882d-f8b6234ff90f/32333340998.pdf
    • https://s3.amazonaws.com/zemigiduwagafu/zudevajedipusalovenurug.pdf
    • https://uploads.strikinglycdn.com/files/17d1eda9-1bab-435c-8a26-5fc5bc369116/windward_community_college.pdf
    • https://uploads.strikinglycdn.com/files/f782be48-34c4-4d28-b92c-f07cc8e847f0/putapupipa.pdf
    • https://s3.amazonaws.com/jusagi/mexewuw.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd11.bin
5d3cbfd0ab3b3ef2ef533833b6eea2ce28ad6245edfd8880dba73a4eaabddb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD11 3068 bytes
font_01_sfnt_off0000d7d6.bin
a7bea104f556a1b21d7ee331fd795db3c85143680c182398005621d82b22d460		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D6 5596 bytes
font_02_sfnt_off0000ead3.bin
c69eab94ec20bcc70f5b6be61c0115cf38e9bb4bd83277be745e584b18393080		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD3 3596 bytes
font_03_sfnt_off0000f8e5.bin
239335e889aa4db5b4684ba3ccf5bd1026db2fbee0a816856fc9c1d1a9aabbcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E5 10676 bytes

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