Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fc09633b33ee90…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 04:58:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b80cf4e432c19ed809ff2fc7bf59a77c SHA-1: 1954b9c964d2dde0ecf104f82bb4cf3c1f09e6d6 SHA-256: 93fc09633b33ee900c6b33a5c828862e21a71da6041b83a6b4cb772094d1ffad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier strongly indicates maliciousness, and the document body contains numerous URLs related to game hacks and cheats for popular games like Roblox and Coin Master. The presence of an external URI pointing to 'netcdn.co' suggests a potential download or redirection to a malicious payload. No scripts were extracted from this sample, limiting the analysis of its execution behavior.

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/flippy-hacking-people-roblox-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/corn-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/is-it-hacking-if-i-use-autoclicker-in-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-heist-2-cheat_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-inpect-console-working-youtube_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-breaking-point-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-you-own-roblox-card-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/rbxraincom-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-engine-roblox-no-survey-no-download-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_off00002d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D47 21948 bytes
SHA-256: 1cb3c3bc9926d895b07717224f277b58f26be5e3bda8f64253c983c4e5c7ae67
font_01_sfnt_off00005d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D97 19448 bytes
SHA-256: 2f639660896e4a80dd94ced48059a506f5bb5612ec6e7727b01f777ea69b3780

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