Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9478c3df1481f8b…

MALICIOUS

PDF

36.4 KB Created: 2021-06-29 07:45:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32aa3e09ce0721eae8b80c6631210b73 SHA-1: 1a8eea7e8f16a1419bed22c814da9c20acb6f189 SHA-256: c9478c3df1481f8baa5d2dc120f4e43e90ae9f3388ef79a8266d1ea1a4e146d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators for popular games like Roblox and Coin Master. It contains multiple embedded URLs, including one identified as a malicious redirector, which likely leads to further malicious content or malware downloads. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting compromised sites.

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/how-to-hack-a-group-in-roblox-2021-game-hack In PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/play-roblox-on-google-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-flip-master_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_off00003482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3482 22764 bytes
SHA-256: 1cd94db54d2de7495e5874df9000eef5b9f70fb943eabc55e8d6c7318b2a029e
font_01_sfnt_off000067aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 19540 bytes
SHA-256: 0e2d7c081f06304f80bead534b5849191393ac3bb0be839879ffed8b9755253d

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