Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad7c0168050aa70b…

MALICIOUS

PDF

52.7 KB Created: 2021-06-09 06:29:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3a50e03385767814d6ab3ea77daf8175 SHA-1: 1b7254749ce96e3572f018e522f577620ef54006 SHA-256: ad7c0168050aa70b1a2a672d71e7e694c2bf177cff0fa07b92e3c0f2f53f2329
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, promising free Robux to entice users to click on malicious links. The primary link directs to a URL associated with game hacks and generators, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to potentially malicious websites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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 https://netcdn.tw/app/431946152/how-to-get-free-robux-in-roblox-2021-not-patched-game-hack PDF link annotation
    • http://perpus.i2s-learning.com//repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-adopt-me-free-game_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/bighead-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-on-phone-easy_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-in-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000542f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542F 25696 bytes
SHA-256: 1a3558a64e7db1a4edea99e205fa7ab2d7ad9681ceb316160425014eabb90d5c
font_01_sfnt_off00008f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F12 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off000098cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CF 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_03_sfnt_off0000a75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA75A 19480 bytes
SHA-256: b590b84beaf42046820e2c3d200098c1034cb5fade883e1c05045c46b8fdb6a7

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