Malicious PDF — malware analysis report

Static analysis result for SHA-256 3333b1c834fe16b9…

MALICIOUS

PDF

81.3 KB Created: 2021-07-15 11:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3c48847835cf8a626806d677a3356fbe SHA-1: 924c0288bf3d248c732e37660b19a74bfa3ddf10 SHA-256: 3333b1c834fe16b9876ed33f704ec81fc7a232634f7d8c1fcc076ddd9fc0aed7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and detected as a phishing trojan by ClamAV. It contains embedded URLs, suggesting a phishing or malicious content delivery attempt. While no scripts were explicitly extracted, the nature of the detection and the presence of URLs indicate a malicious intent, likely to lure the user to a compromised site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/ZV5PD9BTPXI/square?utm_term=six+letter+words+beginning+with+t
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60efde1f1fe2fc56fbe4379c/1626332703675/5388350387.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b15885664d35b0e53e0c/1625796952578/exo_blooming_day.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efde4f177a4e2836d20c6f/1626332752035/boduxawafivitun.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_off0000dc0a.bin
086eaae59036524a31bdd18e8924c592b3acbb0c8e0adf7af8e1d1310bfec2bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 16684 bytes
font_01_sfnt_off00010767.bin
6ad937c507736c389cdc23973b78f77390f826523bb930b128c8eae59ba2ac10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10767 10768 bytes
font_02_sfnt_off00011fec.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEC 16792 bytes

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