Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e56fa7cdad3797…

MALICIOUS

PDF

46.3 KB Created: 2021-06-10 21:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e5a148c977670fe4991255e3f488749 SHA-1: 05507b7d4b8a409a06d4e73e4457011f9d677ed4 SHA-256: b8e56fa7cdad3797e6dde48f71ce6c69126f6a3148203c9caec649be1c49052b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacking, specifically mentioning 'Hack Roblox Prison Life', and embeds a link to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The embedded URL likely leads to a second-stage download or phishing page, aiming to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/hack-roblox-prison-life-game-hack In PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hightspeed-roblox-with-cheat-engine-torso_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/strucid-battle-royale-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/roblox-army-free-robux_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_004_off000053c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53C8 27744 bytes
SHA-256: 23ea4985eaae8c9ab6e58e95d3d73057c70fcff1ef4ea2062fcba12ddf0a9f14
font_01_sfnt_off000091f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F2 18456 bytes
SHA-256: fdce39d00c747d81c0bed22602258809f3d5895638c77e0ae9c71d18352e143a

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