Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c65aa2e6d245b1…

MALICIOUS

PDF

35.1 KB Created: 2021-06-22 21:48:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b7e573a229c8b286b86827a71db48e83 SHA-1: 52fd22ff929d5b04c743ce9f541336562e70fd98 SHA-256: e6c65aa2e6d245b10b6fd78567c7447b380042819ba62ea7444d807ac66adc06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' redirector lure, directing users to a suspicious URL. The document body also contains numerous links to similar game-related cheat sites. This suggests a social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware or engage in credential harvesting.

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-free-robux-100-virus-game-hack PDF link annotation
    • http://upes.edu.sv/ckfinder/userfiles/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/free-robux-eu5_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/how-to-use-cheat-engine-in-roblox-after-patch_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/noclip-hack-roblox-wearedevs_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/arcane-adventures-hack-roblox_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/kid-caught-cheating-on-his-roblox-gf_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/get-free-robux-with-promocodes_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/free-robux-2021-june_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/roblox-free-ninja-animations_GM431946152.pdfIn PDF document text
    • http://upes.edu.sv/ckfinder/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3048 22704 bytes
SHA-256: 0229cee1f473625c731ab7b3b203922333477ab04a1d992fc82f1366bfd9ca2d
font_01_sfnt_off000062ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 19412 bytes
SHA-256: d7e9d234936742959551edd950fc1bba711ae07994ece5a4963ed6af62508618

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