Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f726eadb171627…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 19:13:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9b8d0aefb6c3c2d11a7be06858bc55b4 SHA-1: 30e68150f72518e0ceafb87b79f51346f4ba9e9a SHA-256: 53f726eadb171627f14416e4c4bd28d57ba42c22223053e4853a60a2c20ae97f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is http://netcdn.co/app/431946152/change-your-name-for-free-roblox-game-hack, which is associated with known malicious redirectors. The document body and embedded links strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

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/change-your-name-for-free-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/glitch-for-free-robux-2021-november_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-money-glitch-on-roblox-on-car-simulator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-go-to-robux-gg-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hacke-made-city_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-exploits-roblox-2021-october-for-saber-simulator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-put-e-free-o-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/youtube-how-to-get-unlimited-free-robux-with-proof-november_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-om-nom-simulator-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_off00002f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F88 22300 bytes
SHA-256: 0328caf4a38678d410f75cfee136714e6976a52097008313c3fddd831a7cedd9
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 19380 bytes
SHA-256: 3c823b15d69ea18fe8ba53351d857a6f7d0131549adf6d2d651bcc2abbdaa351