Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3f1ebf473a429a…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 19:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 93cc360a0ee16a1edcc59cf7452e13cc SHA-1: 4a8f325b987594650e1fab1d6978a071a1cd86c1 SHA-256: 2c3f1ebf473a429a941d76e90e10b6f4aa141829accd8a82c7a6b7a2496df129
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/479516143/minecraft-for-chromebook-free-game-hack. The document body and embedded links are designed to lure users into clicking these links by promising free game hacks and generators. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is part of a phishing or malware distribution scheme.

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.tw/app/479516143/minecraft-for-chromebook-free-game-hack In PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/aimbot-download-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/whats-a-code-for-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/robux-hack-2021-on-windows_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/cheat-engine-roblox-bypass-2021_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-hack-on-pc-roblox_GM431946152.pdfIn PDF document text
    • https://www.soil2soul.ae/uploaded_files/userfiles/files/free-roblox-hack-us_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_off0000323a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323A 22120 bytes
SHA-256: ad009e3893313de46dc15244abc56dcce3458223f000aff01466a76c1a233d1e
font_01_sfnt_off000062cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 18752 bytes
SHA-256: 616ab3f700462aed481386b22979965c6dca6356bf91b8a6a5de3323c758484c

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