Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b0e07b1b9876e3…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 12:46:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: a5fe065ad9181e4849e8f1f67d9e1757 SHA-1: 02384f0b3978576e19216ef74f464d78b116f1b3 SHA-256: 72b0e07b1b9876e3adb4db195756243a476c2295a570143da0facf4c7f4d9231
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/irobux-fun-roblox-hack-game-hack In PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-ha-sido-hackeado-por-jhon-doe_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/cheat-sheet-for-guess-the-song-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-hack-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/hacks-de-roblox-sin-virus_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/wild-and-free-id-roblox-code_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-fly-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-no-survey-no-human-verification-and-no-download_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/cheat-roblox-fly_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-afk-cheat_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/www-free-robux-club_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-roblox-executer-purple-bunny_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/will-you-get-hacked-buy-buying-robux-online_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_off00002ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE6 21992 bytes
SHA-256: 381dff1cd89f3c54e7fc04477411466d864f7716fca82defc216d8cd6747dd30
font_01_sfnt_off00005f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F02 18960 bytes
SHA-256: d0813bf33c777f47246497085d6524cda06af869a1740e597a78f440f2b6292a

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