Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2b21daf0fa6920…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 18:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbdbda161daaf52088263e754e744606 SHA-1: ad8582df946d37e5fe0b5518688bd6b6d13899c8 SHA-256: bd2b21daf0fa6920195d4bd7361674be3089c475008c32f0549aa7e23367d690
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks' for popular games. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS ROBUX GENERATOR', further reinforcing the lure. The primary goal appears to be directing the user to malicious infrastructure, likely for further exploitation or 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/roblox-upload-audio-for-free-game-hack In PDF document text
    • http://magnipsor.su/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/pokemon-go-free-levels_GM1094591345.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-builders-club-hack-free-download_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-weight-lifting-simulator-2-hack-script_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-get-free-robux-2021-july_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/robux-free-promo-codes_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_off00002c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C15 21992 bytes
SHA-256: cc5ffb41f166d5a616833a11eadc73a9cc6fc9d8dc095e12dd4f9c49784de8a5
font_01_sfnt_off00005cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 19260 bytes
SHA-256: c344a35c911f842c24858b0bd3c7d63ab3e8dc4b06ebe5ef350b41cf2c8ed8ee

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