Malicious PDF — malware analysis report

Static analysis result for SHA-256 59337e52b658c838…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 21:32:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a23cedf6b1808bd87b6ebc53b399e5d9 SHA-1: 0ff688834ec7cebe6d205380372a8fb7d0570737 SHA-256: 59337e52b658c83814cebb64dced38017b5fa274c72d7a003e3895be40203cfd
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/robux-code-redeem-free-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-gamepasses-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-dev-to-hire_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-admin-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-promo-codes-for-roblox-jailbreak-2021-august_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-counter-blox-roblox-offensive-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-gamepass-roblox-script-not-patched_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/app-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-lawsuit_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_off00002ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBE 22524 bytes
SHA-256: 9609562c0d74398df783d33b4e8e08014c166cbffa551a5f55ea731ddcefad8d
font_01_sfnt_off000060b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 19152 bytes
SHA-256: 3b82bf24ce8c64de1643ff4de579262103e7aca8177db5374342d848a13edc90

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