Malicious PDF — malware analysis report

Static analysis result for SHA-256 809929c50ef69b47…

MALICIOUS

PDF

48.1 KB Created: 2021-06-09 05:29:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36d7d13bb22d83383746db6f13b78bc8 SHA-1: 232d85bee806933328e8ed4e393373b752ec8bca SHA-256: 809929c50ef69b472a6f7e8cacfef758cfa2fa08cd439167de6bb55f2e4a6f7f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirectors, specifically advertising free game hacks and generators. The document body, though partially corrupted, contains a URL that aligns with the heuristic findings. The primary goal appears to be directing users to potentially malicious websites through social engineering lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-roblox-codes-live-game-hack In PDF document text
    • http://jdlrelocation.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/checkmein-free-roblox_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-dragon-ball-after-future-hack_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/descargar-hack-de-robux-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/8bp-hack-coin-master_GM406889139.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
font_00_sfnt_off00005509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5509 25372 bytes
SHA-256: d73c557393f9db3e527e6d70e148bd37ba84ac1983d640571b7f3508e6e50b97
font_01_sfnt_off00008f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000990c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x990C 18356 bytes
SHA-256: 4ad9663237530d12259480812dc02fa09ecdacd7c2882eebf73f4c3daa90e868

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