Malicious PDF — malware analysis report

Static analysis result for SHA-256 343a51a3745fd8ef…

MALICIOUS

PDF

75.6 KB Created: 2021-07-17 22:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d78f3cb9f9c0bff7979b374139ea6ac5 SHA-1: 483e36cf11eba4b9a52db2c5e5f023d1400be5fe SHA-256: 343a51a3745fd8ef0679ec8862a77e77219a613b8dcb9e26367a8d29db164bc0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains embedded URLs that are likely used to redirect users to malicious sites. The PDF structure and embedded content suggest an attempt to exploit user interaction, possibly for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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/WVKuihPcy9U/square?utm_term=do+you+eat+meat
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7a7f4872c4c6263c21fd2/1625794548935/license_plate_agency_shelby_nc.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f283d24f27972c603840c5/1626506194697/stronghold_crusader_ios.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7ae431b0b43e07e5f277/1626110692578/jiguvizuramopixuvefaxoxuw.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f05976e9d32178dd76c393/1626364278594/nm_to_kg_m.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2c1e536db646251998544/1626522085979/how_to_get_apex_coins_for_free_ps4.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed0d77f67381323ef3270b/1626148215176/what_weighs_12_pounds.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e855e2919be219a8327300/1625839074482/collier_county_notice_of_commencement.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ede3544c056a31b81bc170/1626202964650/normal_drawing_room.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_off0000cab9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB9 16792 bytes
font_01_sfnt_off0000e2cb.bin
3e3aeb8e6220c2a988aeb3f8b4b0e5446df1af6a9096f622a89c1a85dfa95c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 16348 bytes
font_02_sfnt_off00010cb6.bin
2f354fdfc1b0c5327cfc5966df0e50190531a16baf1f683fb74c24604f1ffd75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB6 9976 bytes

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