Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc24af13e463a78f…

MALICIOUS

PDF

32.8 KB Created: 2021-06-27 18:38:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 08cd8e5f1ed0d098b8e735ebe094662f SHA-1: cc25103d400f1313ee2f73fcf83e39e3e138cc3f SHA-256: bc24af13e463a78f19ff4c1020f82555de00d82918100ef83ac065fda1559e80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure is for 'Robux' on Roblox, a common theme in phishing and scam campaigns. The document body and heuristics indicate a redirection workflow designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/how-to-get-2021-robux-on-roblox-free-2021-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/robux-free-pc_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-tiktok-invitation-template_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/comandos-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-shirts-free-free-shipping_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-codd_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-make-a-free-robux-game_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacker-roblox-server_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/2021-codes-for-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/descargar-roblox-hackeado-2021-ultima-version_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_off000029f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F5 21748 bytes
SHA-256: 285148550703c08554805387fde9c2a932fc743b103e023e8e0d0adc47444e78
font_01_sfnt_off000059c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C9 19460 bytes
SHA-256: b9548aebee4fea078f2e073a76d2d0036aea3ab2150fa42c508d370631b77ac9

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