Malicious PDF — malware analysis report

Static analysis result for SHA-256 8654856fc0bc6b08…

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 00:19:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3a226eaafe9a5b3952b40e53002df941 SHA-1: c0f8252e256e1b24c60fe195bcc79081a35fe06e SHA-256: 8654856fc0bc6b08fb4065ca47f92aa9d3cb37a91aa972bc322e311c84fc6df2
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 0.9865

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 https://netcdn.tw/app/431946152/hacked-face-roblox-id-game-hack PDF link annotation
    • http://eurocomes.com/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/robux-only_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-adidas-hoodie-free_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-daily-free-spins-link-today-2021_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_004_off000050ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AC 25352 bytes
SHA-256: 0162661dcf9ebd5768720661f3d65ae82a8ef9ce283acc42809a94dd110aef11
font_01_sfnt_off00008b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 18520 bytes
SHA-256: d289475a6d59f82ef45762d040eeecd5dc46604f146e9559ead64b481a13aa4f

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