Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b5d2fb70fb766e4…

MALICIOUS

PDF

75.2 KB Created: 2020-12-31 11:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84e3fc0ece06cf2017e6572523ba4657 SHA-1: 43e8fb37f932853f7bc553597e83460f20ebbf3f SHA-256: 9b5d2fb70fb766e4efea5755e3f471c2b3247595183b709e75a6178c72f489ca
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering 'funny ringtones free download'. This URL is flagged as malicious and is the primary indicator of a phishing or scam attempt. The ML classifier and ClamAV detection strongly support the malicious verdict, indicating the file is designed to deceive users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://traffine.ru/strik?utm_term=funny+ringtones+free+download+pagalworld
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5f9add2d78762.pdf
    • https://cdn.sqhk.co/lapitobexeva/Y4hfVia/a_little_warped_by_annette_marie.pdf
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5fa34347f30fe.pdf
    • https://cdn-cms.f-static.net/uploads/4416805/normal_5fb90fcad8cdd.pdf
    • https://cdn-cms.f-static.net/uploads/4401517/normal_5f961f9b2aa12.pdf
    • https://cdn-cms.f-static.net/uploads/4413369/normal_5fa1177cbd869.pdf
    • https://cdn-cms.f-static.net/uploads/4495526/normal_5fd7160835f63.pdf
    • https://cdn-cms.f-static.net/uploads/4478947/normal_5fe7c9dd70105.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/galinikagopit/bunny_hop_game.pdf
    • https://s3.amazonaws.com/badodemebo/fontspring_demo_font_free.pdf
    • https://s3.amazonaws.com/gomakobez/9573914308.pdf
    • https://s3.amazonaws.com/bofake/osrs_clue_scroll_guide_reldo.pdf
    • https://s3.amazonaws.com/dusubonifu/phantom_of_the_opera_movie_pics.pdf
    • https://s3.amazonaws.com/fonibinaraj/20629512231.pdf
    • https://s3.amazonaws.com/jemazejodep/zuvuxozime.pdf
    • https://s3.amazonaws.com/mipeboro/thomas_calculus_10th_edition_solution_manual_part_2.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_off0000e97a.bin
019b00b62049e8499f96f22e5bbc6f30a35405cfe60e82efda93c257a1da5edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE97A 5360 bytes
font_01_sfnt_off0000fbe7.bin
8531db03c5e8db9345b1f9c6efbe3d0e7e0597c96968d05e02139301e7bb6a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE7 10404 bytes

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