Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b04783c53d11dc9…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 18:38:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 7390d9279e8fdca29bab80fd720be498 SHA-1: 7e2204eccddd43a20086002fdf831aed5323ac13 SHA-256: 5b04783c53d11dc97ef603bfbe3549eae0cc6f856fa66400310d057cf83259e3
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to a known malicious redirector infrastructure and another to a raw IP address, both of which likely serve as initial landing pages for further malicious content. The presence of these links and the lure text strongly indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-promo-codes-for-robux-2021-no-hacks-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-free-download-ios_GM479516143.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/phantom-forces-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/tiktok-free-view-59_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/getgaming-resources-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-player-speed-hack-script_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-change-face-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/descargar-hack-robux-gratis_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-clothes-boy_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/admin-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-codes-2021-april_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-scripting-free-help_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/argent-infinie-lumber-tycoon-cheat-roblox-engine_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-how-to-get-unbanned-with-hack_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_off00002f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F05 22152 bytes
SHA-256: e2374546d1ac547a23f662ab0ec43426ed9d1ed1967a37848ff0e5cfc178b586
font_01_sfnt_off00005ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF7 19952 bytes
SHA-256: 248d2abdd98053eb011e6872d56f593ca40ebee62dee16910575c059d25866d2

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