Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c9093884c1eed4…

MALICIOUS

PDF

77.0 KB Created: 2021-07-19 08:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a611f27289d94a2021ae38df90637e56 SHA-1: b910562e263b22888d697c9f6adfe762e3214283 SHA-256: 01c9093884c1eed42c5485f3508319d6a8858a4768ac010fbfe0c25524c44932
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may leverage JavaScript for malicious actions, such as redirecting to a phishing site or downloading further payloads. The presence of external URLs, even if currently benign, points to an attempt to communicate with external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8972

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/eoPDrVzwpx0/square?utm_term=cape+disappointment+haunted
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0642b87ee3075eb521ef5/1626367019337/vulolazibaw.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee6a69df274736e0ae5dc8/1626237546085/simomami.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec922bf83a7f26ecd1bf57/1626116651848/beledetovebogerulodor.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee5f60aa539923b588c07c/1626234720150/17319163250.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0d5887ffd90482e32c2bb/1626396040436/48780249832.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f500ad6c177f33d7b63a08/1626669229566/law_and_order_svu_season_18_cast.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_off0000cd60.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD60 16792 bytes
font_01_sfnt_off0000e577.bin
2302165f5c6c3665dbb24b994f7895d0fe5c9461c149a98d83921dde7de89b18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE577 10640 bytes
font_02_sfnt_off0000fd9e.bin
2cc7772d990506c940e6c9e31b703d8c1754805df38e601bec0fe211774a06ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9E 16616 bytes

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