Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0ebca01ee7e202…

MALICIOUS

PDF

79.0 KB Created: 2021-07-18 23:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a88a2659989700d28e82a27cfd05c4db SHA-1: 74341ff3aae9820d998193554ee115e2c98d43fb SHA-256: ff0ebca01ee7e2029ce6b10e0753df61061ce73fa64edeb7ab9f083397119cb8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs that likely lead to the download of a secondary payload. The ClamAV detection name 'Pdf.Phishing.Trojan' further supports its malicious nature, suggesting a phishing attempt or a trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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/UkUWPC8UKDU/square?utm_term=constant+stuffy+nose+for+months
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7d45eba333063f1781cd1/1625805918201/wozipijafixan.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edefa4a0f2ca3483d3f2c2/1626206117031/jubivedazivogoxasunir.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8df390a3fc49531a03cd/1626115571537/peselamorowinigiv.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f091bf6cc2533e4dff0a48/1626378687908/forza_horizon_4_mobile_verification_file_download_for_android.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f32dc02be78d52659990a2/1626549696147/dinosaur_personality_test.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f310396678663e6a2cf2dc/1626542137152/how_old_does_a_bearded_dragon_live.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f11224c08012782f803648/1626411556526/i_knew_you_in_the_womb_verse.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecb58b104bab176fa8d45f/1626125707320/read_all_about_it_guitar_chords.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eddd8f80caa629c1dc12cf/1626201487134/53493877664.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_off0000d527.bin
2c1d8f8fca95f9ef7cc09a5f4fa21253dad194b7bcc742d513ebe9bdcfb23982		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD527 10584 bytes
font_01_sfnt_off0000ed44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 16792 bytes
font_02_sfnt_off00010556.bin
be3c26179671e60b393ce4e29f7613b76ba87e022764c0dfded592564bd4de72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 15916 bytes

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