Malicious PDF — malware analysis report

Static analysis result for SHA-256 054fecb6cf680a06…

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 16:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 896fca61f9bb68beb8d2ed7bcf78f385 SHA-1: 6bb35f0376f5c09b78dea71e9432da3226803527 SHA-256: 054fecb6cf680a06888fcdec025d8adc8ee30e22d4b673b83119b1238bc7dfa6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links, with a primary focus on luring users with "game hack" and "free generator" themes for popular games like Coin Master and Roblox. The heuristic firings confirm the presence of external URIs and a specific lure related to game hacks. The ML classifier strongly indicates maliciousness. The document's content and structure suggest it is designed to redirect users to potentially malicious websites that may host scams or further malware.

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/406889139/coin-master-hack-xyz-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/free-il-robux-es-verdad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/legit-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/old-roblox-accounts-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-all-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-girl-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/why-are-you-cheating-on-your-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-games-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-promo-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-royale-high-diamond-hack_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_off00003320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3320 23120 bytes
SHA-256: 4da69adb21df5abffd5691f1e22d55302514d260b4343a31e79b7aab81490607
font_01_sfnt_off000066fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FE 18496 bytes
SHA-256: bd2c90d618eff90014fde70917c30f451870fa3342cf3e365369efdfab30b31e

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