Malicious PDF — malware analysis report

Static analysis result for SHA-256 7313886bbdae94e1…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 04:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9cf8d3c55ea63d023904a1f3ca922e1a SHA-1: 99050c414442ede73c0c334016d38a917a748132 SHA-256: 7313886bbdae94e1daf389291e534d88dd5f4b205da82dd66971e7698415d7db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a "free generator / game hack" lure, which is a common social engineering tactic to entice users to click malicious links. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the embedded URI and the nature of the lure suggest the document is intended to redirect users to a site that likely hosts further malicious content or exploits. The presence of multiple related URLs reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/unlimited-robux-2021-game-hack PDF link annotation
    • http://sagrasantacroce.it/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sagrasantacroce.it/images/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://sagrasantacroce.it/images/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sagrasantacroce.it/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://sagrasantacroce.it/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://sagrasantacroce.it/images/real-robux_GM431946152.pdfIn PDF document text
    • http://sagrasantacroce.it/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://sagrasantacroce.it/images/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://sagrasantacroce.it/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sagrasantacroce.it/images/teach-me-to-hack_GM431946152.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_off000045c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C7 24876 bytes
SHA-256: f3e549968327b0e492e5597d267bf56f01d6606e02a23949a93f88cc1f78a261
font_01_sfnt_off00007ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAD 19168 bytes
SHA-256: 2aefe189653e288cbe67d138bbfc20011991c5c17e595fe9cac661ff7eccdfa3

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