Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6f488b5979ceb8…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 05:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7a7385568ee686bd265ad32eb0b34aa SHA-1: 0d8fb8ca81965ed13621456ce3a9cf3e7333c15a SHA-256: ba6f488b5979ceb8b9d61980557b9460d8cae573afc021c89a80fbce83b1c763
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links and text referencing 'free Robux', 'game hacks', and 'free generators', indicating a lure for users seeking such items. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, pointing to the URL http://netcdn.co/app/431946152/how-to-get-free-robux-free-workinggg-game-hack. This suggests the document is designed to redirect users to potentially malicious websites or downloaders.

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-get-free-robux-free-workinggg-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/viper-venom-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/dragon-ball-flaming-path-hack-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-secret-cheat-codes-for-music_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-without-paying_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_off00002e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E45 21696 bytes
SHA-256: 00fb4d927a3a902297ab7495871d1672af5e010ef14c8aaea4214678e2429032
font_01_sfnt_off00005dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC0 19472 bytes
SHA-256: 8b076792968188087e2baaf9b9f212e91f6a3fb85bc5be9eb20b0f32b50630e7

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