Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb746ec1bfa56afb…

MALICIOUS

PDF

75.8 KB Created: 2021-07-16 22:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4b14b9ab9303a15d04d963c6d111750d SHA-1: f9c9c16af0e5443db9f42265b425a369c05aeefb SHA-256: bb746ec1bfa56afb452ea1cce6770ad93f4cde1067d013b141e5bfc2fd951577
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as a phishing trojan. It contains embedded URLs, suggesting it is part of a phishing campaign. Although no scripts were explicitly extracted, the nature of the detection and the presence of URLs indicate a malicious intent, likely to lure users into a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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/HbdJGeoIq_s/square?utm_term=comma+after+as+such
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edb27b54e5b71ae8504441/1626190459472/jabim.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e95d0f19a9f87deb749c89/1625906447154/dry_gallons_to_cubic_yards.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f1dd20852c5016dba34ba0/1626463520273/83237370555.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e77eca9de7b717682f7481/1625784010631/vavufumonibobelut.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e872adce08835aaf18aa82/1625846445995/wefadajodaxomubapik.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_off0000c7f5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F5 16792 bytes
font_01_sfnt_off0000e007.bin
5f3e3905afde501915978d7916b5a5031797fd761aec2e359aa9ebd5d3907dd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 16376 bytes
font_02_sfnt_off00010a5e.bin
32c4ce31038b398584a3efa4cb5db2d720d738cbfc9041ed94f7ce15b380003f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5E 10492 bytes

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