Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c2122feaee2390…

MALICIOUS

PDF

35.8 KB Created: 2021-07-09 13:53:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b6a3fbfe0997d8d57867d6b17abce2e SHA-1: 721ae52f9147786faf30f5bdd361ca04e73f0458 SHA-256: f2c2122feaee23903d50f66f009cc870aeae190818267af8bdac8f5ed4c81d4e
82 Risk Score

Malware Insights

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

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/431946152/how-to-use-a-hack-script-in-roblox-pet-simulator-game-hack PDF link annotation
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-boy-hair-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/btools-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-working-roblox-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-suite_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.beritabali.com/new/public/ckfinder/userfiles/files/hack-de-como-tener-robux-gratis-2021_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_off000033d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D5 22144 bytes
SHA-256: 41e8f362355cac7beb0cb90cf6980544dc28682987e9a345b590f5f4a42052a4
font_01_sfnt_off000064ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64ED 19772 bytes
SHA-256: 97bcec49394fbfb4f4a59d0b9ccae419c38a60b5ca4444238b3dd5a2088a597c