Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b276c95fb7e1c4…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 03:57:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 05142ed14034153841d5acc6c7202626 SHA-1: d2d026dae76e9d64c8e23e390b959e3377ba9424 SHA-256: c9b276c95fb7e1c4e3a157a74ca51df1bb3b74379873a27ca5ccdf20cc7ffc52
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-get-free-robux-instantly-game-hack PDF link annotation
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/robux-hack-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-get-a-free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-hack-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-hack-knives-in-assassin-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/hacks-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-person_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/injector-to-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/money-hack-roblox-adopt-me-2021-july_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-robux-on-the-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-fly-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/the-society-of-magic-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/what-do-you-do-when-your-roblox-account-is-hacked_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-admin-hack-any-server-unpached_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_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 22876 bytes
SHA-256: d4bd985692aafe72ee2260cb0627e4b216478e088a0bb8b26921a0ecb0c5f0ef
font_01_sfnt_off0000652c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652C 19240 bytes
SHA-256: 46dd4588562bbb2dce6134725fa943138dd103635f5b260b652d173228825468

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