Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c142a44617b7339…

MALICIOUS

PDF

113.8 KB Created: 2021-07-14 05:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c0014e69e85ac06767c67786e07fad2d SHA-1: eb62c6915902c73ba92cfe62ad42d89d6954ec28 SHA-256: 2c142a44617b7339026e24619f01ae63f8abe34b8b79a302a3cb9f4bb6b6f5ed
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as a phishing trojan. The 'SE_INVOICE_LURE' heuristic indicates the document attempts to impersonate an invoice or payment request. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1391

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/EjZ5HCEZs_A/square?utm_term=legal+ethics+bar+questions+and+suggested+answers+pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edecf63e0111437129dd7e/1626205431045/squaw_valley_shopping.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e952b42a6f785f5835e212/1625903796829/call_out_to_meaning.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_off000159ab.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x159AB 16792 bytes
font_01_sfnt_off000171c2.bin
50d7ac0c538f2a6323df68f97e8db1d745168a9f01ccbb243ff60f9f5e5eaad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x171C2 11328 bytes
font_02_sfnt_off00018baa.bin
a90ceab22e2b7d816e7fc1155d52202f9cbe8c9587dc553d715a2263382bb4fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18BAA 17464 bytes

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