Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe236725a5b0a47…

MALICIOUS

PDF

90.1 KB Created: 2021-07-12 23:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 87bd1b3d4357754d28d29ee65daf8d69 SHA-1: d4d17ae1eedea8dd9db5322e99b5e22df48ad401 SHA-256: 3fe236725a5b0a47dc3ac25044e0657203164d51e5eb81e136b0fe136b4bc58c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs that likely lead to malicious content or further stages of infection. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick users into navigating to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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/~3/4Ji06Fp1PxY/square?utm_term=how+does+selling+your+stocks+work
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e814b5d0799e4214c29aad/1625822390147/taxi_driver_full_movie.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e77431fa8c02622faba57d/1625781297916/how_to_get_to_yoshis_island_in_super_mario_odyssey.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e924f4e6bd1231e6080f11/1625892084470/11838804985.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec893cdcef4a49b3ab69a0/1626114364602/period_color_means.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86f3c0c9c5f4f141c3542/1625845564797/24093553760.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecace67b14134336e0a8fd/1626123495095/2780368922.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8f7451a87c5d75acce2d/1626115956670/31937300279.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93fa7b14134336de07e9/1626117114785/birapulutilonuxesumibi.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8781d62e6514f69067e47/1625847837297/best_website_for_indian_movies.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec85103a853d606aecbdd2/1626113296190/pojuzeguz.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_off0000f3a6.bin
9135e2092d7ae80fab4054ed13a18d9e551f8672a11638e15ef714641f22e73c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A6 16944 bytes
font_01_sfnt_off0001202c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1202C 16792 bytes
font_02_sfnt_off00013839.bin
91e885a49a911ed9b4a21a68741f724fad17a0ed0ef40b18d588c4fd1f2d9009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13839 2400 bytes
font_03_sfnt_off000142c8.bin
60171a489515ea97e7c945c3eeb28b3576b9ec7cdf57db9c0247854146804706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142C8 10768 bytes

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