Malicious PDF — malware analysis report

Static analysis result for SHA-256 e073bee6ead83e40…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 19:49:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8073e10c568dfaccd456aea5fd7de835 SHA-1: ba3b580bf3748ac8ffaeee4b01683ea088e24f71 SHA-256: e073bee6ead83e40857bf535c6c8c94b978cdaf98b264d8be8bdc2480196e134
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites that promise game hacks and free in-game currency, such as Robux and Coin Master spins. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs strongly indicate a lure to trick users into visiting malicious sites or downloading further malware. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the user might be prompted to download a password-protected archive, a common tactic to bypass security scanners.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://netcdn.xyz/app/431946152/robux-only-game-hack PDF link annotation
    • http://eurocomes.com/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-free-cards-for-coin-master_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
stream_003_off000048d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D6 25480 bytes
SHA-256: 556c1e7e9d484e1804662eefbb4a2f00a1c1efe921202c378f7c1a096fe97ebe
font_01_sfnt_off0000838f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838F 18104 bytes
SHA-256: 835647ca3f0bcc9c34df60568ac9a35acac0655e7da8ad66dbd525e7cff734af

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