Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce9438e87479d99…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 08:25:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5dbd31fad6f1dc0a5f3302e20c4105ee SHA-1: 47e9f1b8c44ef0e760ec7ecd1395de7d142c781c SHA-256: 6ce9438e87479d996562612379c15fa43880edd303098e7dc87f23081a8566ee
76 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/406889139/coin-master-hack-tool-v1-9-download-free-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/go-through-walls-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-hacks-in-island-life-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/auxs-roblox-hack-pack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/como-hackear-cuentas-de-roblox-facil-y-rapido_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacks-to-get-robux-in-tower-of-hell-may-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-giveaway-2021-dot-tk_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-scripts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/daily-coin-master-free-spin-apk_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_off00002f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F69 22888 bytes
SHA-256: 8a8f20d14cc91c8db98ad8b29678fe3f3f051b3b64898a0fe8b5e58c3cd37027
font_01_sfnt_off000062b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 19152 bytes
SHA-256: 0d1f30c93590d7be307be14cc9b65d68a250ed06121cbcad92b33e392225c9a6