Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d0c81af2d33fe7…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 17:57:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7eb0a6b4c327ee6cd5134dc4613f37af SHA-1: 1175184e65de31f2def866160cd3c65e7e4baa52 SHA-256: 64d0c81af2d33fe7cf2098e0820c8bff6c56b783e7df20c2eda70981f3c58fce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a 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. The primary goal appears to be directing users to potentially harmful websites for financial gain or further compromise.

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/roblox-gift-card-for-free-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-generator-no-download-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-promo-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/top-5-games-on-roblox-that-gives-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-in_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-medieval-hood_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-follow-bot-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-clothes-on-roblox-without-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/do-you-want-free-robux-get-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-roblox-games-on-mobile_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-on-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000303b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303B 22424 bytes
SHA-256: 068162b0182674fc7fcaec857e9d9ccb234a6651c4534debc36efe3217ae5f26
font_01_sfnt_off00006205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 19048 bytes
SHA-256: 36d692819cd4052ea0b92a15cd52fa98a127e8d11e0430d7a0f06642361bda99

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