Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab4646ec17aa420…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 18:22:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0dfbd8f012421551acb78b788c51250 SHA-1: 5f3ba762f6804a96708fb43645d4d4f13d0a1bfb SHA-256: aab4646ec17aa420bd9f9a2731df5fe57afadc05c64e32f01400c1920c64a850
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that explicitly lure users with promises of game hacks for popular titles like Roblox and Coin Master. The primary URL, http://netcdn.tw/app/431946152/in-jack-hack-roblox-game-hack, is identified as a redirector likely leading to malicious content. The ML classifier strongly supports the malicious verdict, and the overall structure suggests a phishing or malware distribution attempt.

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/431946152/in-jack-hack-roblox-game-hack PDF link annotation
    • https://klp.com.tr/inc/uploads/userfiles/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/how-to-hack-age-on-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/cheat-engine-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/grab-points-login_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/dragon-ball-legendary-powers-roblox-hack_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/the-cheat-code-in-roblox-wonderland-games_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/games-that-give-you-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/trurkey-hack-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/hacks-for-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-robux-hack-app_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/claim-robux_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00002ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC8 22160 bytes
SHA-256: 8b1e1f619ebea3854a6af8e723986ab6c47721bcd57a6c55dee0b97b6ec5cea3
font_01_sfnt_off00005ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF0 18820 bytes
SHA-256: fc1cd7eca13c78e57461a046d6de51aa91356fe1815afcba298c19ba34ad83db

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