Malicious PDF — malware analysis report

Static analysis result for SHA-256 01377bc82e517e05…

MALICIOUS

PDF

34.2 KB Created: 2021-06-18 18:22:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3d30fd2d043bedbf6a670141fd2cabf4 SHA-1: 2b586cfe3330625c0bff848bd8c0b4ceaf3d6645 SHA-256: 01377bc82e517e05f20ec8dbe01044f371fa3f6025f41b606643150e4bf21292
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.co/app/431946152/free-robux-easy-fast-ligit-game-hack PDF link annotation
    • https://gryps.de/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/robux-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/hack-roblox-phantom-forces-synapse_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/cone-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/roblox-chat-cheats-on-rocitizens-teleporting_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-robux-watch-add-to-get-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/free-robux-real-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/roblox-demonius-free_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/how-to-cheat-in-roblox_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_off00002f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6B 22240 bytes
SHA-256: be04f4b32a347aeec4b8c80ce9d753b4d094b0dc4d5e1f6a125260820b148428
font_01_sfnt_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 18936 bytes
SHA-256: a934ca02a6c9b50f3abaee3b16fbb4985e4e19095f9ae4939fe989dd1fe792f3