Malicious PDF — malware analysis report

Static analysis result for SHA-256 7900217b6a1a2379…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 15:07:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 20c2818ba5b774a500ecea5e95bbafd4 SHA-1: 01724ae756136cfc68027c38e539198d7ef4385d SHA-256: 7900217b6a1a2379971b129e9b35c19178abe35b71bdd34badaed0219eb61c74
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 0.9864

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/why-free-robux-scams-suck-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-do-a-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/pubg-uc-discount_GM1330123889.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hack-no-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/a-group-that-give-u-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-link-in-coin-master-2021_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_off0000519c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x519C 25624 bytes
SHA-256: 2cbd6e338b5f7b2659b7c2027c2899243330f5ea5d013b05a5b247b6e0038764
font_01_sfnt_off00008c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3B 19216 bytes
SHA-256: 004773a37479524b5e77aafd011fd1eec4a7a93c90202b10c3a3d2cee468abce

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