Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a93b6fbae3b25a…

MALICIOUS

PDF

34.2 KB Created: 2021-06-22 23:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff2ddd06610de40eb3809985dae96c99 SHA-1: c409398cd9d1534a9569661c7f84ea6710fad197 SHA-256: 43a93b6fbae3b25a15c05d9ac9f5538a07fbf0dfa515b184a68e4eea8c5da12e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hacks and free item generators. The primary lure appears to be related to Roblox and Coin Master, aiming to trick users into clicking through to potentially harmful sites. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/list-of-free-items-on-roblox-game-hack In PDF document text
    • http://linens.kiev.ua/images/adidas-roblox-shirt-free-design-high-resoulution_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-free-obc-in-roblox-within-30-mins_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-jailbreak-teleport-hack_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/football-legends-hack-roblox_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/roblox-before-the-dawn-cheats_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/horrnoclip-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/free-robux-gift-card-hack_GM431946152.pdfIn PDF document text
    • http://linens.kiev.ua/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.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_off00002edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDB 22252 bytes
SHA-256: 3c7e64f9bfab2bfc2b7efd515af1201e4696c4eaf21bfc87375c4528043eba1e
font_01_sfnt_off00006078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 19132 bytes
SHA-256: b36df32918ea7fa29a9d2a7850305e972dea9065ff18e801089fa15b649752d4

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