Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3be91ae185d12f…

MALICIOUS

PDF

33.5 KB Created: 2021-06-20 03:19:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f0428d1eb5ffbc6d1573bf5de8a1d06f SHA-1: e136e0c483c53e6d4a2e803ec6c0f8ce93e30079 SHA-256: 2a3be91ae185d12f6d2b13fc1cd18059ac69897c9ff37ebef89b0ddefe29b14b
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to redirector domains that are flagged as malicious, specifically promoting 'game hacks' or 'free spins' for popular games like Roblox and Coin Master. The primary lure appears to be a 'free generator' or 'hack' for Roblox, directing users to http://netcdn.co/app/431946152/filter-peint-existe-hack-roblox-game-hack. This suggests a social engineering tactic to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery.

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/filter-peint-existe-hack-roblox-game-hack In PDF document text
    • http://uristdona.ru/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/promo-codes-roblox-robux-free_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/imperium-roblox-hack_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/hacks-para-roblox-online_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/roblox-how-to-hack-people-39_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/code-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-spins-coin-master-app_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_off00002cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDC 22000 bytes
SHA-256: 8542c7ef80c07ec07cf66d7e83012fab620f01e523eba79f8bb50efdddbe5ed5
font_01_sfnt_off00005d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D67 19200 bytes
SHA-256: 7d5bae810cba2655a0fefbe8e9790e9440bb50d1b12333c7b806bd4df9b76ef8