Malicious PDF — malware analysis report

Static analysis result for SHA-256 7579d2167004961b…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 04:04:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9a698e4fc9b9bf847aabf488d52e245c SHA-1: 86e2702400b413c545e1d35de809fc17117195f5 SHA-256: 7579d2167004961b2608c094c1642a90e86cfb0588c23c50d34dfca0ba367d7c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free items, specifically mentioning Roblox. It includes a critical heuristic firing for a malicious redirector link pointing to 'netcdn.co', which is designed to trick users into downloading further malware. The document body reinforces this by displaying the same lure and URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-free-bundles-in-roblox-2021-game-hack In PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-admin-hack-adopt-and-raise-a-cute-kid-download_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/how-to-make-free-private-servers-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-november-2021_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_off000031a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A2 22092 bytes
SHA-256: 0b08e9c73a3f62f9432ab41aebf4d41994819684cef226b80677431de287cf82
font_01_sfnt_off00006229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6229 19632 bytes
SHA-256: 5bb8679e1528b3b8b482766a34ae3fd78bc8b090ab37d949dc34d4dc37fb0527

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