Malicious PDF — malware analysis report

Static analysis result for SHA-256 665fdc9d09ac0d35…

MALICIOUS

PDF

36.8 KB Created: 2021-06-29 16:34:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7196a11861992900568a488bbe57fb9 SHA-1: 097ed4b7f27a9af4a9be0002c7499170296b7078 SHA-256: 665fdc9d09ac0d355379feefc8650618b6a832146f074e522a4e7aba2e5139c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and document body text that explicitly advertise game hacks and free items, aiming to trick users into clicking. The primary URL, http://netcdn.co/app/431946152/how-to-fly-hack-in-roblox-phantom-forces-2021-game-hack, is flagged as a malicious redirector. This suggests the document's purpose is to lead users to malicious websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/how-to-fly-hack-in-roblox-phantom-forces-2021-game-hack In PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-christmas-meepcity-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-online-hack-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-deathrun-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-dragon-ball-z-final-stand-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/all-cool-free-shirts-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-roblox-accounts-2021-bugmenot_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-roblox-games-that-give_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/los-hacker-de-roblox-mas-peligrosos_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-swat-free_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-promo-codes-july-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/robux-builders-club-free_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-cheat-engine-scripts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-with-edit-this-cookie_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-tix-and-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-apocalypse-rising-hack-exploit_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-live-stream-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hacker-roblox-for-free-robux-2021_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_off00003302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3302 23420 bytes
SHA-256: 628e5fd9957cac583e617d36267d870274206eaca42270a0857439ba9284ced9
font_01_sfnt_off000067b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B6 20252 bytes
SHA-256: 2331d747e32ea4ad24b6eeb2fb2e923dafcaf5efbc93c76316d97fcb0d9da991

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