Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a249bb6a57b5cb…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 14:11:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 314c69e0724d81b8b15f2c2820a24c45 SHA-1: e2a8b7ca12b1b3407b1ac14ad19e67954472d7cc SHA-256: 21a249bb6a57b5cbcdb6d209abfb453fd9da268665a8ebe390de3d3eb8e6f108
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically mentioning 'Coin Master hacks' and 'free generator'. It embeds a URL that redirects to a suspicious domain, likely to host a malicious payload or phishing page. The ML classifier also flagged this PDF as malicious with high confidence.

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.tw/app/406889139/are-there-any-coin-master-hacks-that-actually-work-game-hack PDF link annotation
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/ui-pack-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-code-sharbites-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-roblox-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/como-hackear-robux-a-un-amigo_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-obby-actually-works_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-june-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/hack-engines-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-noclip-in-roblox-no-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-using-a-website_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_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_off000035d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D7 23276 bytes
SHA-256: e31d85247386712987c5f16bf07b4874641cf86a7a4f1bc65d5d1d47dea51287
font_01_sfnt_off00006a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4E 18764 bytes
SHA-256: fda0f92cf4b877814e31b565e5e35f3727f0f59612dfc2e3edd29183971e4e11

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