Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ca0b0e36425a9b…

MALICIOUS

PDF

74.5 KB Created: 2021-07-13 21:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bcb16e3785c48c2b2ba170a6a123c473 SHA-1: 8e7ed85183361a64d2ab4be66121b982b23dbbff SHA-256: 00ca0b0e36425a9bfa36aa5faf91da31ef45e90358963791672f245d3fed7fea
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The document body was unreadable, but the overall heuristics point towards a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=best+hikes+near+conway+nh
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e87ad665cc8c2003ecbaca/1625848534774/xezakosad.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9267a12fb7d0b279396e8/1625892475037/296308330.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e78b9a8f757b1ac44c8d1a/1625787291179/live_broadcast_meaning.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_off0000c44d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC44D 16792 bytes
font_01_sfnt_off0000dc5f.bin
fa6d2f574ea77a79ed112063e6806a673f0074cdb37f8967707e9d14eb4c93cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5F 16104 bytes
font_02_sfnt_off0001061e.bin
bacc26803b7009a761a0558ef3afe4c012cc6d365d16684c9546abb9f378b323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1061E 10628 bytes

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