Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71e1a7ae451433b…

MALICIOUS

PDF

81.0 KB Created: 2021-07-14 03:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 30006e8a4d934fe9c627036b9a43afec SHA-1: d6bcd3377b1bffc48c3fb77ac628564fe2f1c3ca SHA-256: e71e1a7ae451433b9ea51b0fb6166f023b7639bec5e58eae26ea4b1218edd5c3
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. An external URI was found embedded within the PDF's metadata, which is a common technique for phishing lures. While the URL itself is marked as benign, the presence of the phishing signature and the embedded URI suggests a phishing attempt. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3811

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/pL_UGxDroB4/square?utm_term=the+meaning+of+bane
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee16caaa539923b58344e6/1626216138336/45373019997.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec9b1fe0784948549aa2c7/1626118943649/mevakavil.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8db44616123fc5fcc2db/1626181044263/zorijiwig.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb70.bin
7e8d0f92622635f8f6144a8310b7f1703d2c23d78fa057806ddbb678d2373f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB70 20356 bytes
font_01_sfnt_off0000fdd8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD8 16792 bytes
font_02_sfnt_off000115ef.bin
9f9b4b272ccfd8e9a791cb8e5e9b02c6cdf7b05a93e37d01b1105f969c5c3c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115EF 10352 bytes
font_03_sfnt_off00012d0d.bin
bd0f7e95ef05e7162394e3b2b384c8ea049343a5cdf9ee9e0c8a37d16b4cc803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0D 2028 bytes

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