Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa2eea86af1f922…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 13:52:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: af43a5d9d1f2f47d5b245c681e0efbd0 SHA-1: c9b9b6ebf13c774c5b7d74df50205306216e4887 SHA-256: 9aa2eea86af1f922254e220c7b1d3cf786e9dce5f020843f52a7521940aa61f6
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/how-to-get-free-robux-easy-2021-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/conquerors-3-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-game-download_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-in-roblox-on-the-pc_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/image-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/comandos-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-on-a-hp-laptop_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-online-hack-no-survey-no-password_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_off00002fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDD 22184 bytes
SHA-256: fde4a9c53443ef1ef5e7ee0fed552e4ffb386fdb86d61fdeaa30da4617283967
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 19568 bytes
SHA-256: 6047aacc591c706ba05485d06cfe5ae263460dd3f24b02a1ffd0afe45eaea607

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