Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39243ca70489aa0…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 12:02:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff5606d3dbf5921e7f40971cdbd1dd3f SHA-1: 363521011ed87d36a5111f33af50e32ef30e9652 SHA-256: c39243ca70489aa0638669d8c0fa05e665b24d054a01e2bfc213e1442643b11f
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/479516143/minecraft-story-mode-free-download-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/robuxian-robux-hack-prison-klife_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/donating-free-robux-live_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-catalog-script_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-noclip-2021-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/cheat-files-org-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robuxcom-scam_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-gift-card-codes-unused_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-robux-download-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-thumbnail_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-cbro-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hot-to-get-real-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/cmo-conseguir-free-robux-generator-2021-100_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-free-to-pay-or-codes_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hack-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_off000033d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D7 22520 bytes
SHA-256: 071f8cfb466401eb2f9dbc4c7ba2b651ee0d44b37306a2c93baec5e7e71c348d
font_01_sfnt_off000065de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DE 18760 bytes
SHA-256: e9e1fef330823a40f58c60832c4229904102633f954732c5db6da758049cb8f7

Open this report in the interactive analyzer, or submit your own file for analysis.