Malicious PDF — malware analysis report

Static analysis result for SHA-256 591b523c0d0a8e55…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 10:02:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f565aff1cc6fa76ea483833c6d479cf4 SHA-1: 2210ea2f2a7d03ad5784c750415914d27866abac SHA-256: 591b523c0d0a8e55bbf145e08a4afe26c75f334715d1ce672f909ae639cf3b33
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 0.9900

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/431946152/robux-hack-2021-game-hack PDF link annotation
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8C 22672 bytes
SHA-256: fe2aba56baca079362c5e4fbbf4cb9e5d57f92e13e134ad82cf167d04b1778f9
font_01_sfnt_off00005d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 18836 bytes
SHA-256: ad94fc69aa6b6efce6b7f50eee8b6d005acbd1b011ebbc598c5501659abc7a0f

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