Malicious PDF — malware analysis report

Static analysis result for SHA-256 f258cc119a62c876…

MALICIOUS

PDF

81.2 KB Created: 2021-07-16 00:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e2b94f4ee8738674db78d242c78ce578 SHA-1: e03fd8e386684606c7cffc187ad76a2e73cbf5fb SHA-256: f258cc119a62c876a10b82fc161cee1228371bfc1a6af20202ae981dc6bc2e34
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to a suspicious URL, which is likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to deliver a phishing payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5793

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/AG-UZpNbJGc/square?utm_term=labor+code+of+the+philippines+2017
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e12cc0906550d907c0d5/1625874732259/mibovuwideginetomujegini.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edb30cac23c31e62ff483a/1626190605232/temple_of_ramses.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee0f7f84a0477e84a7de71/1626214271778/nilatudowaw.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed94d5c8312e4ee1dd9e5d/1626182869791/fastest_way_to_get_flying_in_legion.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_off0000db73.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 16792 bytes
font_01_sfnt_off0000f385.bin
8546dfb63b3cac953db27c9c54737f61aad5d2d09acd3bacbce098de4113528d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF385 16724 bytes
font_02_sfnt_off00011f1d.bin
463f19d3c35d0cb210844f51044ce360f2dbc8fb40a86cbee84aaba7ad9ea3ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1D 11160 bytes

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