Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6afb39120cba2c2…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 00:45:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b29faa10c0dd5e159507e4fdc6d5744e SHA-1: 74b6bc0687f48f4184b480135291beb87f37bf71 SHA-256: f6afb39120cba2c25b1479a8d5be70850e84afcf14d7d8aebabfe919c8128475
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-robux-only-username-2021-game-hack. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 https://netcdn.tw/app/431946152/free-robux-only-username-2021-game-hack In PDF document text
    • http://ghhs.com.my/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/inject-hackcom-roblox-app_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/roblox-cheat-island-tribes_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-get-free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://ghhs.com.my/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://ghhs.com.my/images/good-free-minecraft-server-hosting_GM479516143.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
stream_004_off00004ebd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EBD 25496 bytes
SHA-256: 76c15e29345eb804c22733b371f70bfef68e199d1cbc6ab41fe4c55aca3dfbc0
font_01_sfnt_off000089c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 19344 bytes
SHA-256: d955da433f960ead27bb6309845ae0aeb2594a2fda6dcb241920c8e26d26b15f

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