Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bae6b28572ee86…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 03:30:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: c3dab1655d40b0fbbf9450ad06113138 SHA-1: f77f14e8310f214a531591fbadde9f8129e612c8 SHA-256: 72bae6b28572ee8680f01568b444f47f428a984ace83a9eec5cf3bd60be6d932
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-get-free-robux-no-human-verification-2021-game-hack In PDF document text
    • http://perpustakaan.ipts.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/clients-minecraft_GM479516143.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
stream_003_off0000479a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479A 26196 bytes
SHA-256: 00c996bc612b5bb11d8b96c552f3ebeb88b765ea36eb1acd76d04e7f3b1c8619
font_01_sfnt_off0000815b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815B 19428 bytes
SHA-256: dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c