Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b98c82d8a60bfc…

MALICIOUS

PDF

36.2 KB Created: 2021-06-28 19:27:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 60cc43d8859a1158f505406005efbb27 SHA-1: 12a11d99e656c4a3733ebfc9c3e831acb446b320 SHA-256: 08b98c82d8a60bfcaf0401c157b518cf5f104f71a638cb8c797fdd50932f0a9f
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/synapse-download-roblox-hack-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-free-robux-games-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-sign-up-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-captain-america-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-for-everyone_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/cheat-in-roblox-free-robux-pc-no-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-segway-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/generator-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/lyce-de-roblox-2-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/what-roblox-game-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/kazok-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-jailbreak-nuevo-menu-de-hacks-actualizado-rocket-fuel_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_off00003460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3460 22652 bytes
SHA-256: d0c4ebbccc740a2e1398867913f59096c34a6ec6c83835aaa2592d2dc01123a4
font_01_sfnt_off000066d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 19516 bytes
SHA-256: 379e80d4c3ac52b0c277234f289c4ae83d10d7759904a68a8baf97847fab02bb

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