Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e67d1bf440217da…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 04:43:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4d47d9af667e322f4b70aca785415258 SHA-1: 622a62b4a94f7189da210c239ee6fd75f3e3f0dd SHA-256: 5e67d1bf440217da3fa39c322d2e4a52aa501056362003572a9921eb98bf4c85
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/how-to-hack-in-roblox-using-cheat-engine-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/dfield-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-gamepasses-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-gift-card-numbers_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-apk-hack-mega_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-open-inventory-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-robux-on-roblox-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_off0000307c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307C 21852 bytes
SHA-256: ea28f1339d8c40a4c28b8f7f70a50289650e4814048d8f01a83f915a9aecce03
font_01_sfnt_off0000606f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 19212 bytes
SHA-256: 6b3093100b83e7b179e6b9488a096416b467f280ac677929bb8e9b0ad77d7ddb

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