Malicious PDF — malware analysis report

Static analysis result for SHA-256 213b7be89f0e635f…

MALICIOUS

PDF

46.3 KB Created: 2021-06-01 07:47:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 837974385f5003dad35ffa30853d8b89 SHA-1: ad756855f7d6904b7a4baf06747f4eaf35a1e5cd SHA-256: 213b7be89f0e635f33eb9cf406ea872b605b838e6b03fc7028606fd659ccd15a
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links, specifically luring users with 'free generator / game hack' content. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-hack-in-roblox-murderer-mystery-2-game-hack. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading or navigating to further malicious content, likely exploiting a client-side vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.xyz/app/431946152/how-to-hack-in-roblox-murderer-mystery-2-game-hack In PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-roblox-full-lua_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/roblox-bucks-for-free_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/roblox-phantom-forces-dll-hack_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/rbx-points-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/money-hack-restaurant-tycoon-roblox_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/robux-script-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-oprewards_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/pagina-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/installer-roblox-hacker-sur-pc_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-or-downloads_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/roblox-restaurant-tycoon-hacks_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/roblox-tr-808-vst-free_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-roblox-account-2021_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
stream_004_off00005259.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5259 26956 bytes
SHA-256: ed89fbf18d00787e85b066cbfba449175d6c3cc5f00c12b5ebae7ebbc9ae1b00
font_01_sfnt_off00008f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7B 19264 bytes
SHA-256: 592f9142dea778f9664ddb082c4ba28c317c47b3ab2e5b17f42925d2de0bd764