Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9c911b35c90b32…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 03:54:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1688d2c8109c094d0de4329543b64de6 SHA-1: db96feab5df1699060128eaaced8386cd78c8052 SHA-256: ee9c911b35c90b321af762ab4ff1ad038d26aae91cd2fead2616f7b064aa0df7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/cheat-online-roblox-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/hacks-for-roblox-windows-7_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-25-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-free-legit_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/autofarm-hack-roblox-pjj_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-do-you-get-robux-for-free-on-phone_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/cheat-roblox-retail-tycoon-116_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-mad-city-bypass-anti-cheat-script_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-codes-list_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-star-wars-group-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacker-destruye-la-ciudad-roblox-pokemon-go-miannn_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/2021-free-robux-daily-hack-created-by-robuxian_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-item-going-limited-in-roblox_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_off00002f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6B 22192 bytes
SHA-256: fea5d56aa4a0e201af3f99ef87cc289732ff3082e0ee489bc1d5130e62f4cdc3
font_01_sfnt_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 18876 bytes
SHA-256: b61ab1784fa2c3dc6368e4d3b11f931d81cea678552be127ca69fb861eacaa2f

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