Malicious PDF — malware analysis report

Static analysis result for SHA-256 191a524cfeb0f117…

MALICIOUS

PDF

36.9 KB Created: 2021-07-03 13:51:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: e04b1c19ee20c3cd1365bdf34cfd265f SHA-1: bab94ccde1236cc38f2f4017d13a69b5b845e799 SHA-256: 191a524cfeb0f117c486386c5c4d5eb429177f55ec9a1ab467dba8e9164bee48
160 Risk Score

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.tw/app/406889139/coin-master-free-spin-link-today-2021-game-hack In PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/roblox-rifle-script-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-roblox-card-codes-june-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/has-momo-hacked-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-bloxburg-how-to-get-free-money_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-highschool-free-money_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/cheat-engine-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-real-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/bucks-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-hack-gameplay-jailbreak_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/wwrobux-giver-free-com_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/xxlolaplaysxd-free-robux-help_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/hack-para-roblox-tycoon_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/computer-hacking-game-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-robux-no-offers-or-human-verification_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/i-got-hacked-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-any-gamepass-on-roblox-for-free-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
stream_002_off000035f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F2 23528 bytes
SHA-256: ba114baa28b032c2fea026ba42d0f289b7c667dfb20d94340ce3e4ef33d407a3
font_01_sfnt_off00006b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B48 19100 bytes
SHA-256: 87948dd456158924639af78db2b6f448ba4bec773812a2cc2fa62bc058a3e5dd

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