Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b43f1c3acb701d…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 07:37:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a5fdfe445d94bff4329c8fa8ca5df341 SHA-1: 099ed6b8c099a1df5b4b1f59ab9b173a82022d24 SHA-256: 24b43f1c3acb701d30b139e6bb9b9962f6e58dcb11df6473e182544d48e97776
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The document body and embedded URL reinforce this, directing users to a URL associated with malicious redirector infrastructure. This indicates a phishing attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/robloxfun-com-generator-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-thumbnail_GM431946152.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
stream_004_off00005107.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5107 24508 bytes
SHA-256: 20a3a84972a9c27f6e9a1ba967a696f5940713402791ccb7ae76a87488f5e851
font_01_sfnt_off0000893d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893D 18516 bytes
SHA-256: c214cdc5875b8c54705917548ad95da7f9ccbf3c1d69b6e52c4f4c9c63cb00fa

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