Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e788f71199eb385…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 20:49:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 349ec8068b0239f1e16e5b0b68c25a66 SHA-1: d901af1be115f9940109e03f785e8a16feef0a98 SHA-256: 4e788f71199eb3856e54d7f007bbe1fd6820c2230513a4016ed869d69df6557f
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.tw/app/406889139/coin-master-free-spins-app-game-hack PDF link annotation
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/redeem-gift-card-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/robux-apk_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/roblox-hacks-lua-vs-lua-c_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-on-roblox-app_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/real-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-no-hack-ios_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_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_off00003084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3084 22408 bytes
SHA-256: 33caf4a182203522dfb16016a08e4d31bd23179d8d61f4c0f04625627e9902ae
font_01_sfnt_off00006261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 18176 bytes
SHA-256: 4f2c7f50c50d911764fc5880fa9a71240a98bde4d6a03cad0f4e23413d6df79f

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