Malicious PDF — malware analysis report

Static analysis result for SHA-256 1918fc9de9ed5f92…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 21:08:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: c13df303626025cff3d950e323a905b5 SHA-1: 03485d0e13ffdf0cc3c287ee6d684e58cc79beff SHA-256: 1918fc9de9ed5f92eef5d94aefcbbbc20d2df044e7f91a917d2f47d26e555bfa
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/431946152/robux-codes-generator-no-human-verification-game-hack In PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/what-website-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/my-account-keeps-getting-hacked-on-roblox-what-to-do_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-dll-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/scarf-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/get-any-roblox-items-for-free-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-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_off0000322b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 22156 bytes
SHA-256: 3109aa710cffb673d4c2a1192ce1afcaad01e62989043240a254f71d3347fc25
font_01_sfnt_off00006349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6349 19344 bytes
SHA-256: d97a6452949562d75530f92f626f1cbdf04310b8890864793c0fa9c83aa1390d

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