Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b2afd9d6575666…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 00:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f662e2ceeb976692d7c19920ce19db86 SHA-1: 00e855652898382961fafcd922bc02df73ae426d SHA-256: 82b2afd9d65756666bb83b800974275df5f44994cd01336ec9b5390389ec670d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure, specifically http://netcdn.tw/app/479516143/wurst-18-game-hack. This suggests the document is designed to trick users into downloading potentially malicious software or visiting a phishing site. The presence of numerous other URLs related to game cheats and free items further supports this social engineering tactic. No scripts were extracted, but the primary attack vector appears to be user interaction with the embedded link.

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/wurst-18-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/how-to-get-a-hacker-out-of-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-free-gg_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-un-used-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-roblox-restaurant-tycoon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-make-something-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-make-t-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-no-human-verification-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-fame-simulator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/gift-roblox-com-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-change-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-hat-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/notoriety-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-rc7-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/nike-roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-royale-high-hack-club_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-exploit-injector-hacks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FC 22256 bytes
SHA-256: ae33b2e98d0e1963f2dbde3952be8736318b70682b0ee58b8e439c7c39d8d8d4
font_01_sfnt_off00006512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6512 18388 bytes
SHA-256: f7343f89130bbe7749ba861c18716880cd21441eb855f17b99e2147c09a8a62a

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