Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5fe6209e1dc762…

MALICIOUS

PDF

35.1 KB Created: 2021-07-19 13:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 77d25184b25a15f5c385b838201ef660 SHA-1: 906888b64cbe425bf6075fd1179ae7acff945227 SHA-256: 0c5fe6209e1dc7622cbd23864eab31763133f79e8ca4dd9ad6142614967fdf98
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 0.9970

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.tw/app/406889139/free-spins-coin-master-links-game-hack PDF link annotation
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-mac_GM479516143.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_002_off00003288.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3288 23616 bytes
SHA-256: cfe9a3caa50d6a44799e159ee220ed51627c441621c6fb9deb942e2d39b3beee
font_01_sfnt_off00006819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6819 18056 bytes
SHA-256: 07f1a9832fff0ce02b8ea8bcbd6448fb7022c7ac6c85a00fb5b887865844234a

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