Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0ea0ba70b0cf8b…

MALICIOUS

PDF

86.2 KB Created: 2021-05-22 21:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 159d207c3a71a7ba2002febcb7897f26 SHA-1: b94658f76e6b6d82a6de476dd3f6c83d48c18c50 SHA-256: cd0ea0ba70b0cf8b8b42027d1a5339612fb5034a8c9c9fdc54ef28a91e79cf92
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The primary URL, https://seumenha.ru/strik?utm_term=peter+pan+2003+full+movie+download+in+hindi+480p, indicates a lure for pirated content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=peter+pan+2003+full+movie+download+in+hindi+480p
    • https://cdn-cms.f-static.net/uploads/4420745/normal_60111a5dddeda.pdf
    • https://cdn-cms.f-static.net/uploads/4376087/normal_604180470d035.pdf
    • https://cdn-cms.f-static.net/uploads/4468259/normal_601723891c833.pdf
    • https://static.s123-cdn-static.com/uploads/4383699/normal_5fec3c9e8dfb8.pdf
    • https://cdn-cms.f-static.net/uploads/4458161/normal_605f926515912.pdf
    • https://cdn-cms.f-static.net/uploads/4490376/normal_6021bbdd1e68c.pdf
    • https://wakutoji.weebly.com/uploads/1/3/4/3/134314583/rowuka.pdf
    • https://cdn-cms.f-static.net/uploads/4495244/normal_604a8f1caca20.pdf
    • https://cdn-cms.f-static.net/uploads/4475866/normal_5fd772cfddcd1.pdf
    • https://xedatuvigino.weebly.com/uploads/1/3/4/5/134580066/4e754e5257d20.pdf
    • https://lewibodozibepa.weebly.com/uploads/1/3/3/9/133997785/c3d2fc294bc68de.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kakef/grey_s_anatomy_season_11_episode_guide.pdf
    • https://s3.amazonaws.com/dowesitobuga/pioneer_mvh-s310bt_wont_turn_on.pdf
    • https://s3.amazonaws.com/dowesitobuga/76904729452.pdf
    • https://uploads.strikinglycdn.com/files/ac7abdf1-50e6-415b-9ee9-1d7daa238d8e/51651646885.pdf
    • https://s3.amazonaws.com/gumagabu/tamubemedadopa.pdf
    • https://uploads.strikinglycdn.com/files/531e5733-8062-4486-86fc-322ff576cdb4/55294825484.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f804.bin
edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF804 6440 bytes
font_01_sfnt_off000107fa.bin
7748e371895886b2d3a0ef42986a14f250337e02d32d03411ff956c7afdb2a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 5976 bytes
font_02_sfnt_off00011c39.bin
db10b07aa1ba911afaf060b12e2cde8c70dbbf9941f30369d108722010ce9547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C39 1648 bytes
font_03_sfnt_off00012483.bin
017761b887d1eb5fa0896b54a7e1a427a499a1ffd0afa7c6ce0d8b46bb89fb0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12483 11208 bytes

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