Malicious PDF — malware analysis report

Static analysis result for SHA-256 972531abf80705fb…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 02:43:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 14b996d485d3b16e9c7c9e7762915cb9 SHA-1: 036f1faac7ac2911084ce7a0e82e2cbb58c33d31 SHA-256: 972531abf80705fbaf4ea817b5117749c92589ece24ba9df8ef41abc2d9f7cea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and document body text promoting 'free Robux' and 'game hacks', directly linking to a known malicious redirector. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were extracted, the document's content and embedded URLs strongly indicate a phishing or scam attempt to redirect users to malicious sites.

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/get-free-robux-com-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/earn-robux-for-free-offers_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-speed-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-obby-meaining_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-login-hack-password_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-paste-data_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-twisted-murderer-free-credits-givaway_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-mad-city-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/pokemon-ultra-brick-bronze-roblox-free-shiny-umbreon_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-make-a-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-promo-cides_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/codigo-hack-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/9-billion-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-roblox-with-kali-linux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hacks-in-bee-swarm-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-map-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_off00002fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBD 23276 bytes
SHA-256: 5cf2e777a038033639492a1cef22dcb234bc661a39e9c140283b5599fa4b3cb9
font_01_sfnt_off000063e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 19080 bytes
SHA-256: bd48df5b3587c62f460ac4547970d78652d76b982da8f06603591dccd4bca80f

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