Malicious PDF — malware analysis report

Static analysis result for SHA-256 4374e3ab62e5e813…

MALICIOUS

PDF

36.4 KB Created: 2021-06-29 23:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f0f27109114364d60935a90ac96ee35b SHA-1: 0fb723fe5d42932ed0590f9a6362a8103edcb4c5 SHA-256: 4374e3ab62e5e8134785aa8e7d8295cac09148f5eb7424607d9c27060142c1f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. The document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to compromise user accounts or deliver additional malware.

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-robux-2021-codes-in-game-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-cheat-for-brick-bronze-all-pokemon_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-anyones-account-on-roblox-still-working-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-robux-on-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/como-hackear-ultimate-driving-simulator-roblox-dinero-infinito-dansploit_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-anti-speed-hack-devforum_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/npq-game-hack-admin-game-steve-one-piece-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/overhol-roblox-free-shop_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-to-get-money-in-gta-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/packet-of-world-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-roblox-speed_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pastebin-roblox-robux-free_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_off00003398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3398 22812 bytes
SHA-256: 18d62b797847a1fc2d6e94046eec6d96fff5d7cbda524fcea56572cde43a25bd
font_01_sfnt_off000066d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D7 19820 bytes
SHA-256: a5efc12342b313c8b7a3b0ab66944583b8f0b09cf4061953b93765effbfa548e

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