Malicious PDF — malware analysis report

Static analysis result for SHA-256 925b1356a7bdab9b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 09:29:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 97b5a5ac93e4cf88ffca4426766bdd7b SHA-1: 13f6aa32a9d3576f42819ebbbddbd7dbd3c9ed54 SHA-256: 925b1356a7bdab9b06bc0cc2c1007dcf7c3bd479947d9ab0ca8506ef7fac290f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/479516143/minecraft-bedrock-free-with-java-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/roblox-free-download-building_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-exploit-synapse-x-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-fan-club_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-point-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-you-make-tshirts-free-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-you-make-a-shirt-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-dominus-roblox-code_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/not-fake-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-hack-pc_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/dll-hack-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-game-no-password_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-mod-menu_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3018 22372 bytes
SHA-256: 565d272698867a2b5ed30f666d7e12a29083666e322954946a12eb51f0d7607d
font_01_sfnt_off0000616c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616C 19204 bytes
SHA-256: 83f28f522109b57a387354fb29e9d473d9efeebf56f50fcbd96710e633a7f7ef

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