Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c8ddff48848aea…

MALICIOUS

PDF

76.1 KB Created: 2021-03-17 00:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 444888181210bdb5a81fc6b141b78966 SHA-1: 3b0339a91745d77914ef2281b280588c8f197e7e SHA-256: 69c8ddff48848aea56c804468466017c0bbbd0769f449c5cea5690740fa9ae3f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam and phishing. The 'DOC BODY' content, though heavily obfuscated, suggests a lure related to 'Miami shark unblocked 66', directing users to potentially malicious URLs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=miami+shark+unblocked+66
    • http://jetitorurojufe.22web.org/99573073045.pdf
    • https://cdn-cms.f-static.net/uploads/4427287/normal_601ac9fc87445.pdf
    • http://nenonazuf.scienceontheweb.net/zavuj.pdf
    • https://lotinusola.weebly.com/uploads/1/3/4/3/134321880/wipofetubitizeni.pdf
    • https://cdn-cms.f-static.net/uploads/4497370/normal_603d7c56ef583.pdf
    • https://guladusive.weebly.com/uploads/1/3/0/9/130969442/zonire_limanaja_vimorobixo_lutoz.pdf
    • https://cdn-cms.f-static.net/uploads/4859805/normal_60268b0067b91.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/333cd6cb-2f8d-428c-b1aa-5683f984ff41/how_to_set_my_citizen_eco_drive_wr200.pdf
    • https://uploads.strikinglycdn.com/files/74238bf0-29b4-4f55-85d2-0af700da7a15/73782060613.pdf
    • https://uploads.strikinglycdn.com/files/02d91707-859b-4562-b08c-eca9c1f039fa/21840727026.pdf
    • http://jozeratajugik.rf.gd/tales_of_demons_and_gods_manga_277.5.pdf
    • https://uploads.strikinglycdn.com/files/48f419e4-b2cc-493d-92c5-6e7b7a116d9c/zisorajotonolufu.pdf
    • https://uploads.strikinglycdn.com/files/dad6e0fc-3478-4bfe-a684-c626798f7411/15073459745.pdf
    • http://wemaxoseni.myartsonline.com/lisuderasow.pdf
    • https://uploads.strikinglycdn.com/files/c283e43d-68e3-4794-8bee-8d18b9323db7/sinopsis_film_a_river_runs_through_it.pdf
    • https://uploads.strikinglycdn.com/files/ef1cf423-3f96-4503-bb7f-a2334fb88df7/photoshop_cs6_full_tutorial_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/d11bc717-6407-4ba4-a772-1f5f73b3eaed/datofobimolujuvakekos.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d700.bin
edf31f3c58e51f5b726f990786d18cd69b7eb42664a6f33a000a5a542c8d82b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD700 5540 bytes
font_01_sfnt_off0000e9b8.bin
f36e46ebc45ac93f252c01eaae0abdce80e9533485cd77409dec1e8a99086240		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 10820 bytes
font_02_sfnt_off00010db2.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB2 16204 bytes

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