Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cc2e74f2627840…

MALICIOUS

PDF

130.4 KB Created: 2021-07-15 15:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 919a8a8d4cf5d35c47a3db2348fc5445 SHA-1: 3ff3115368034c59699ec5154fc0f2373f5af7b2 SHA-256: d3cc2e74f262784058d9db7293a4eb89981452b6a055af361839691796596274
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan. The presence of an embedded URI and the 'Urgency Lure' heuristic suggest the document is designed to trick the user into clicking a link. While no scripts were explicitly extracted, the ML classifier and ClamAV detection indicate malicious intent, likely to redirect to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6149

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/eaN1Eb74jJI/square?utm_term=hrct+thorax+meaning+in+gujarati
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60eccfd97971f422f04da09e/1626132441250/22636288685.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee19dd796bb0196c5ee7e5/1626216925956/vadojevitidipej.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7e1bc3fb560d26f252a4/1626111515852/13200341795.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e874bc7727436ecd345471/1625846972425/s2_made_in_abyss.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f008f9bf9aec2111af769c/1626343673731/suzigup.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_off00019cf7.bin
fa6a53648676513f25548431b586a8c4bc1e0de578b6ad2113d8095f6e2f4ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19CF7 18104 bytes
font_01_sfnt_off0001ccae.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CCAE 16792 bytes
font_02_sfnt_off0001e4c5.bin
a3e755fc17c7721cab830607433e0ba78c046e5fe401b688e5875722538795b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4C5 10784 bytes

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