Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b9fd1a3cae12cc…

MALICIOUS

PDF

33.0 KB Created: 2021-07-03 22:48:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8b876050025f5b4b544c1c7f4ac22ea9 SHA-1: 7d309c7f881dbe5ba60e40bd41e73f2cab6458ec SHA-256: 82b9fd1a3cae12cc2b1238dcb4428e01e644b60d1d97747ff5869b7033b3c18e
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/835599320/free-tiktok-comments-game-hack PDF link annotation
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-people-swim-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-engine-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-permanently-have-free-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-free-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-the-hacked-face-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-money-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-how-to-execute-scripts-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-game-stolen_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-do-you-get-free-money-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-hack-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/the-best-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/cupcake-jailbreak-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/script-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hiw-to-hack-miscreated-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/doomspire-brickbattle-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-fly-hacks-download_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_off00002ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED9 21748 bytes
SHA-256: bd3facaaa4c471e3d95de7a3a3ed173c641c96124069e1f7d421e9e6283c8bb4
font_01_sfnt_off00005e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 18232 bytes
SHA-256: e120f102f916e15f77850e37af923051ddd04191899a513836841ceac9f79054

Open this report in the interactive analyzer, or submit your own file for analysis.