Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c54438a7c615648…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 10:17:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9fd53550806a6c36ad0642ce8d28c9cc SHA-1: 18dcd8c1c22d1ebb23988dfed29d4d7c6433f900 SHA-256: 9c54438a7c615648ccbd60a0ef05cf272df267e424007f7bc61640ccdf145507
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators for popular games like Roblox. The heuristic PDF_GAME_HACK_REDIRECT_LURE directly identifies this lure. The document body, though partially garbled, contains references to these lures and the malicious URL. The primary attack pattern involves tricking the user into clicking a link that leads to potentially harmful content or further malware delivery.

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/npq-game-hack-admin-game-steve-one-piece-roblox-game-hack In PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/body-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-make-a-group-in-roblox-2021-free_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-hack-badges-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_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
font_00_sfnt_off0000330a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330A 21892 bytes
SHA-256: 777c109b7231b9cf0b3578faaadb47271247b46f8b8ff15286f5af71f91864ce
font_01_sfnt_off00006308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 19928 bytes
SHA-256: 51b32d056d409c390f62d09d98cb32da64bc6d2a4916affc0ff3aa755971d734

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