Malicious PDF — malware analysis report

Static analysis result for SHA-256 47907017cad715e4…

MALICIOUS

PDF

80.2 KB Created: 2021-07-15 15:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9e72eca9748188ed49382e6e3f87280c SHA-1: 153c55da169f33b10f30123a50763719383d6823 SHA-256: 47907017cad715e4c96cb66e99cee39456ac9dd3565da8ff1b45eb99dfa73926
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and an ML classifier as malicious. It contains embedded URLs, and while some are marked benign, the overall structure and detection suggest it is designed to lure users into malicious content or download further payloads. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/-MXWpcYQ7kA/square?utm_term=how+to+mob+spawner+in+minecraft
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eff5c008697753172e9332/1626338753141/largest_cities_in_broward_county.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca97b5f8bf96907218135/1626122619453/how_many_paragraphs_does_a_persuasive_essay_have.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec91dc243eac6055d00008/1626116572679/rabilovajidalidibufaw.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_off0000d32b.bin
ec2770d55f68a28c7c4d967505651fe41b8dd7a774b96a8fd7e978ae35a82ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD32B 10812 bytes
font_01_sfnt_off0000ebea.bin
188719a255699613a7c77854aa29ea6f1a99572d60c0ae9badc7e37586ca9691		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEA 18744 bytes
font_02_sfnt_off00011d19.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D19 16792 bytes

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