Malicious PDF — malware analysis report

Static analysis result for SHA-256 6083e84791d4b5a2…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 12:13:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c57590105cd6c644b923e8450375eece SHA-1: ddd825af6b15a2634f3fcc293f0824dc9ae74ba2 SHA-256: 6083e84791d4b5a25b4de2dec36bf0872c46e4c25414fc5f02b855de28e45fc1
102 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 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-get-free-robux-by-playing-games-game-hack PDF link annotation
    • http://36.94.36.7/elib//repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfPDF link annotation
    • http://36.94.36.7/elib//repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-events_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/6-ways-to-get-millions-of-robux-unlimited-free-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-to-get-free-robux-no-joke-2021_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/coin-master-hack-apk-download-for-android-mobile_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_off00002da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA8 21888 bytes
SHA-256: 6815f2512c7664f62e0e0c8f625058da29816eee66bedaeace36272297a3e4e2
font_01_sfnt_off00005e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 19772 bytes
SHA-256: 9e977a5575cc9b35e2b14531736cd30bfd9bd13fa3776d4baf53e95f9fc8fb94