Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2299bc28bdb5243…

MALICIOUS

PDF

102.5 KB Created: 2021-07-12 20:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 755d44be693b5339737624f1f32b5d91 SHA-1: da34e7bcc8e8677bc8e34e89af2b297ea54329ad SHA-256: c2299bc28bdb524375dbe9bf6a9731875d9ae6013c5c05b2bc650b29ec117fe6
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan-d2568dad23a94d95'. The presence of embedded URLs, even those flagged as benign, suggests an attempt to lure users to external resources. While no scripts were explicitly extracted, the PDF structure and the heuristic firings indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3225

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/IdU8rIDf9lQ/square?utm_term=dirty+words+that+start+with+o
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7b930cf33f708d7994e3/1626110867456/fobopevatasigepagud.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d013546fd16393e40f04/1625870356083/tisotoxowamoxogumo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8a0b76c9928302e0ecc1d/1625858232060/exothermic_reaction_experiments.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7e16288cf71862a8fe6e/1626111510791/match_with_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e2.bin
18399e980a6e7b1526bd4c64ec29231ac110c978d46c0f951ce8e9be61972d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E2 24484 bytes
font_01_sfnt_off000131a6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131A6 16792 bytes
font_02_sfnt_off000149bd.bin
7a649443afc5d12484b13d286e9717ddc11ffaf02555b2f828c559665aa082fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149BD 10264 bytes
font_03_sfnt_off00016103.bin
818ca81a2ee0d2e28c895aa48f77bf9a1e8218ce4cd7cfb34eef4dfb3bcd305f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16103 17048 bytes

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