Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66748f93b05d732…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 06:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2dd2e5c548bd48a8af8448fc46609751 SHA-1: 30868b5b9cf5940c516e1d873887d4fed25119ae SHA-256: a66748f93b05d73232f4d8c7eecd2383a51447ccfb9b9530ae7bebb35b47897f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'free game hacks' or generators, a common lure for phishing or malware distribution. The heuristic firings confirm these links point to malicious redirector infrastructure. While no scripts were extracted, the document's structure and content strongly suggest it's designed to trick users into visiting malicious sites, likely as part of a phishing or scam campaign.

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-aot-t-shirt-free-game-hack In PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/tiktok-free-credit-card_GM835599320.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/top-5-games-on-roblox-that-gives-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-hack-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-robux-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/does-roblox-allow-free-rebux-websites_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.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_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 22280 bytes
SHA-256: b6dd8eb5878424431d63a53ca04ce457fcadcb31245e7568bf6feb4d9e3d4dc5
font_01_sfnt_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 19076 bytes
SHA-256: 2a8e3294b17078075683669d143857fc4c3e9bc51b1c61f99b2413b172dc2813

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