Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23dab9eb2808653…

MALICIOUS

PDF

72.4 KB Created: 2021-07-14 04:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0d5a7eaa150f2776a3ee29809806e82d SHA-1: d74369d35d69e680be91b9f96249e9961cff3eec SHA-256: e23dab9eb2808653ca33f7dcc57be133016416345368233838a8a5633abc5391
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, disguised as a game download, is a common phishing lure. The PDF document body is unreadable, suggesting obfuscation to hide malicious content or scripts, which is consistent with techniques used to deliver phishing content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7342

Heuristics 4

  • 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://feedproxy.google.com/~r/sq/ugae/~3/RVI1sXQGPkU/square?utm_term=need+for+speed+1+for+pc
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec92cd8c19ad4998dc3c9f/1626116813639/how_to_save_a_trimmed_clip_in_imovie.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d0173bde986563e465d8/1625870359648/wave_function_mcq.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edc687a9d1f62037e04284/1626195591652/4336524055.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_off0000bf48.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF48 16792 bytes
font_01_sfnt_off0000d75a.bin
fee9389f14fe4070c49c7fa885e8c776418ef407033b436e8cda5608df1e928a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD75A 15524 bytes
font_02_sfnt_off0000ff1d.bin
1e36c8e8ae3f5fd2627e6b4db47e53fafe2361a2c2fcac138c9f3062812a61b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1D 10140 bytes

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