Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4477a2e156732…

MALICIOUS

PDF

43.5 KB Created: 2021-05-20 06:51:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 4edc57c682d6dc7962f85e5f45f0d0c4 SHA-1: 2a13ec69e740b70144782df8d2b6fdd770db41ea SHA-256: 72b4477a2e156732587cb8b00c4bfec9baf233de2c7e50bc4247ec7db2a92425
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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/835599320/tiktok-free-view-iphone-theme-game-hack In PDF document text
    • http://grabmyinfo.com/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://grabmyinfo.com/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://grabmyinfo.com/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://grabmyinfo.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://grabmyinfo.com/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003fac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FAC 27168 bytes
SHA-256: 37c31dec3ec2350dce496ec3ebac12863ac3777a1d59f323ab7c96615da01008
font_01_sfnt_off00007dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBC 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off000087a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A1 18356 bytes
SHA-256: 8ba2f935c329ea89aab93fc93efceb752347bad01d1493e0f1c8aefc241030a6