Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6bf556336a5361…

MALICIOUS

PDF

96.8 KB Created: 2021-07-16 20:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 13ce42b4c7223e31fd2e4033e488b0b2 SHA-1: b4dc76b1e9dfb01528a58fc3b73c1d9e427ba39c SHA-256: bd6bf556336a5361732fdf88791544805e960b05fa42f35ca1c56faf0598b039
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains embedded URLs that likely lead to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a phishing site, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/qQn0o4eTdIQ/square?utm_term=vehicle+repair+and+maintenance+contract+sample
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8d30c1d90976278aa029f/1625871116130/nonton_fast_and_furious_6_full_movie_subtitle_indonesia.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee0e63588fb5669510a45c/1626213987965/pexididu.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed3d9eff6d86145b9e14dc/1626160542518/the_seventh_type_of_ambiguity.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edfc73172ba47bdac707d7/1626209395566/frigidaire_oven_f1_beeping.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f09dc5d4c6c521fcc2d008/1626381765371/kuvuwu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0b430c08012782f79eef3/1626387504423/words_change_to.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec79edfa40056e74d14253/1626110445716/tockle_quest_guide.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee97f9bb85ab7f02c177f4/1626249209274/onedrive_group_policy.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ece2e6f8b4e244e4f75f84/1626137318695/torakiwoko.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ca6c1b22c82f862d8665/1625868909316/18024625702.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7c5236e46386ca3bf70be/1625802019388/pricing_decisions_in_management_accounting.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee5ae29c71001bedf7c8a2/1626233570152/tubidy_mobile_mp3_song_download.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9371483ae0c490239d440/1625896724218/chaps_and_fades.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_off00011ad8.bin
8642eac37dfb2bdfb051d8236f1858b16933d532a7aadf4c39336f66a789e90a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD8 16652 bytes
font_01_sfnt_off000145d9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145D9 16792 bytes
font_02_sfnt_off00015df0.bin
85c4072d9553214bae8b295dc3efc365b9548828864c71b96d9ced9e4ecc3e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15DF0 10748 bytes

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