Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d85bedccaa3225f…

MALICIOUS

PDF

43.2 KB Created: 2021-05-11 15:09:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 26a80aebeb1348fa35fa0938fa494563 SHA-1: c82ffb6c39ce220bc6de6dc0ab9be821798c21e6 SHA-256: 0d85bedccaa3225fac205e9dbc009bdd86b0f0fd95f7f7f8e7c878cb407ae12b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with deceptive content. No scripts were extracted, but the document's structure and linked content suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-no-verification-or-survey-2021-game-hack PDF link annotation
    • http://pustaka.stikesperintis.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spin-coin-master-game_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
font_00_sfnt_off00004c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C18 24160 bytes
SHA-256: 075d21a862777b80cb5bc21069d752fc3c85b8d0529c123d51424964490fb573
font_01_sfnt_off0000836c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836C 19296 bytes
SHA-256: 8ae3a64377bb3499e06ef2dc6ba5ce98d8bac2a4cf46517fa6b68a3eec67b541

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