Malicious PDF — malware analysis report

Static analysis result for SHA-256 e530e6ddaf74fa73…

MALICIOUS

PDF

78.8 KB Created: 2021-07-19 17:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 31a130e2253e30b7b8f14315030c3174 SHA-1: c30a780d2e7ca3f8d6f305cae1a46a98ff8807f8 SHA-256: e530e6ddaf74fa730ec494d1cc4c089c86205e2ebd02ff51dea50c3c23d0d15f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier. It contains embedded URLs, one of which is associated with a potential phishing lure. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the ClamAV detection suggest a phishing or malicious content delivery attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/cEZ-xJcQpFE/square?utm_term=after+effects+project+download
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4ce8a689a653fd2a8d37b/1626656394588/pizza_bar_tycoon.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f50335b84a576e6c13e3da/1626669878085/69169772043.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee3ffddf274736e0abc2bb/1626226685855/homemade_creamer_with_condensed_milk.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f51d999c57c24939509f9a/1626676633104/hermitage_castle_ghost.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_off0000d48d.bin
9f94711206f2f82c7218c63ca1f3c04bba851ac50e4baba4e1ac8b71eb8da8d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD48D 10716 bytes
font_01_sfnt_off0000ed6a.bin
e430a6f8ac3350861408d5adcfd316d5f6971e7847425933e4d3f21218a2d0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED6A 16196 bytes
font_02_sfnt_off00011770.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11770 16792 bytes

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