Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc86cbcfe40bc08d…

MALICIOUS

PDF

75.9 KB Created: 2021-07-14 07:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 210cc0222c9e36c9b52d6617a1fb6112 SHA-1: d332cf83ccf6f51b067c5d7f496e04c6d6a3c6ce SHA-256: cc86cbcfe40bc08d76ed291bf1b449bfa908a5328aae46aacbdfd9b9daeedf40
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The presence of embedded URLs, though marked as benign, suggests an attempt to redirect the user. No scripts were extracted from this sample, limiting further analysis of its execution flow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8791

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/gOBB6uaVNRA/square?utm_term=funny+beauty+pageant+answers
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8c261e1e3555a3245f517/1625866849382/the_power_of_pentecost.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e77341903cf451be71bef3/1625781057934/ple_questions_and_answers_2018.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee404dab0cb8743be4bb50/1626226766025/xamalogugejefomij.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edae4042b2804958681aed/1626189376820/6260437908.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e84883d602fc26e46d0ce6/1625835651639/aghast_in_tagalog.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_off0000c840.bin
e20c8d4a9093beb9af9772403cfb7e7439c1d4f130bc17ff7208db8d24f10c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC840 10584 bytes
font_01_sfnt_off0000e074.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 16792 bytes
font_02_sfnt_off0000f886.bin
28f46edc30dcbbe09c7635e792a81f44af018a2a3c70eb342f2a873fdee65429		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 16816 bytes

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