Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf77b21ce4298e9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 19:51:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f509de8f8986888c41dafa88266a6b8b SHA-1: eaadc95ca02f1276c1a536bc6e9d93d89f3b51de SHA-256: 3cf77b21ce4298e96ab0f7b927567a146542ac0442fe3430912d2b005fcce4a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the PDF structure and embedded URI strongly suggest a phishing attempt to trick users into visiting a site that likely hosts malware or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/is-it-possible-to-hack-coin-master-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-coins-on-robowling-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/cheat-seconds-thill-death-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/hacked-in-roblox-from-zia-lets-play_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-on-ipad-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/robux-gratis-hack-android_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-no-human-vertificc_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-generator-no-human-verification-android_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-all-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/mod-menu-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-clipart_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-free-stuff-list_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-promo-codes-for-free-robux_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_off00003438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3438 22556 bytes
SHA-256: b2f3d59841191e4d9938eb0acdc48b745a45f4e560951fb73921be7651989db4
font_01_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 18392 bytes
SHA-256: 5563d41e0a2f825e738172ff978da0f7025b3d27ad8196c941bca4059e74542e

Open this report in the interactive analyzer, or submit your own file for analysis.