Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a27b7433daa3708…

MALICIOUS

PDF

77.6 KB Created: 2021-07-13 16:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80f8ebb7e1b1e841c0811eda895e7769 SHA-1: 6adbdee79bb6fb7119dda4993f06f9605799c832 SHA-256: 3a27b7433daa3708f42ac799971648f4aa3056468e05d596a47bb0c9b403e58d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains embedded URLs, suggesting it may be used to lure users to malicious websites or download further stages. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

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/~3/0YvHz_IItD0/square?utm_term=management+of+information+security+whitman+pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8ce3e8f67167615ad0abe/1625869886986/93121050843.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7e4dad1bf7105ccb4f3c/1626111565765/45016557441.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8e045563c1506a8b2b12d/1625874501212/ford_ranger_manual_or_automatic.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e87fc8f09bc23e177c8918/1625849800937/dorituxiponedelozejil.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_off0000ce83.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE83 16792 bytes
font_01_sfnt_off0000e695.bin
1d30af0db42bdadbf35cc8cb0ad39509ed21866f7b26778dc87ca9bfce6d074e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE695 16128 bytes
font_02_sfnt_off00011015.bin
9a33babb8aa51593e28f690f97128e2e1ff8ec6bf9ab8d1b2d80fc4adadf3939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11015 11312 bytes

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