Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c88aeb0933bfeb…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 04:15:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71d22a7df13044c3bb589efde26d20c3 SHA-1: ec26f7675e5ef767ddb1f1e5d17b145e34ea5d9e SHA-256: 59c88aeb0933bfeb936d71306e1daeac29aee3f38e96f8d82e885ea7302f45e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, disguised as a lure for free game items and hacks. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the malicious redirector URL used in the lure.

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/how-to-get-galaxy-hoodie-free-roblox-game-hack In PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/games-that-give-free-robux-without-pass_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/freespins-coin-master_GM406889139.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_002_off00003329.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3329 22328 bytes
SHA-256: 9a8db92b500e9ebfa697645b216ed9406d9579fab9d9756b052004cf41dd8fdf
font_01_sfnt_off000064cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 19392 bytes
SHA-256: 65c105ee4c801d1096b7d5936f77ff3381a234ed6067f69bb94bd1bcd0ca29a3

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