Malicious PDF — malware analysis report

Static analysis result for SHA-256 2720cf5b0383c197…

MALICIOUS

PDF

78.5 KB Created: 2021-07-20 06:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0f503a53ee940a02344c4c0fa4f28582 SHA-1: 764bc4165c45bf1fa4effd56e54a314f60cf0316 SHA-256: 2720cf5b0383c19713f3ee6e3deacd6c5cab9a33b8137402444fc501f543aa25
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains an embedded URL that appears to be a lure, referencing 'clash of clans hack unlimited everything', suggesting a social engineering attempt to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest potential for malicious JavaScript execution or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5764

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://feedproxy.google.com/~r/sq/ugae/~3/uzX87CUNjRg/square?utm_term=clash+of+clans+hack+unlimited+everything
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8a0213c197e145b2504f5/1625858082320/xisakid.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee8e7f64675e3b9de596fe/1626246784068/bakuxi.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2fefd860d895b48232177/1626537725490/indomethacin_with_colchicine.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4722cce637c25834580e1/1626632748570/werigidumijapibebosu.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://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_off0000cec7.bin
2a6b24436b22bd3419048ce8a4d97e2b55bee03049f2355277bfab150e27a269		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC7 16448 bytes
font_01_sfnt_off0000f9c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C1 16792 bytes
font_02_sfnt_off000111d8.bin
e51a51c0f182124cbb1e061d0d0dfb15d2e36d892c29e2cd54dd3becde9be45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111D8 11328 bytes

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