Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb2c6d9e0323137…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 09:22:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 435f3eec0e16d531649cd2bc5ca3dd64 SHA-1: 147f227364b79808247a02f11bb0d87d25fbf61c SHA-256: 5bb2c6d9e03231372642f8cf5f6041a0bda7cb096d99817f4fa0c71128be5378
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/431946152/free-robux-no-verification-or-survey-2021-game-hack PDF link annotation
    • https://razredna-nastava.net/files/roblox-free-robux-generator-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-free-suit_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-cool-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/pastebm-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-followers-roblox-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-have-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://razredna-nastava.net/files/https-wwwrobloxcosims-4-cheats_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/awesome-roblox-outfits-for-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-hack-scripts-to-fly-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spins-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_off0000324c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324C 22116 bytes
SHA-256: 0d1806b6d02ebc53925db278f572a740d9f5af40de208b25481e3e945df1b9ae
font_01_sfnt_off000063a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 19772 bytes
SHA-256: a441bd845f25f30d9b35deb0a49928c69a030f2d5bccbb8c502819d18c42e29e

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