Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8da11ead4f5805…

MALICIOUS

PDF

40.9 KB Created: 2021-05-12 01:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dcf78a8136671c06e9615f4e92debf6e SHA-1: 964e3b798aa049af4d0a7c394fec0110b1188dd4 SHA-256: 2f8da11ead4f580574edebe30cbc9c96632974001aaf0558bafd467e58ea8dee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a lure for game-related scams. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-tips-game-hack In PDF document text
    • http://www.hlad.hr/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/earn-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-cheats-2021_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
stream_003_off0000464b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x464B 24684 bytes
SHA-256: ec7d72b34b16ecbf3c44fb1d9d0253f5cf39ca8897bbb832de0a40c2796695da
font_01_sfnt_off00007f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F20 17724 bytes
SHA-256: 47f1771a310bbd424fb5c5011bebf45412061033fc49cda5461d9fa2df00a095

Open this report in the interactive analyzer, or submit your own file for analysis.