Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eaf4f6d5269837c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-16 14:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a74df77f95bc6b83c490f7bd96e5673e SHA-1: 621843d0435a744c6a34779606a093f1e84579e1 SHA-256: 8eaf4f6d5269837cd08dc2a92bdf1e8e54517de7609cb34b2e3cc223e57b2e67
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 0.9971

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 https://netcdn.xyz/app/479516143/toolbox-mod-game-hack PDF link annotation
    • http://eddegrootassurantien.nl/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eddegrootassurantien.nl/images/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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
stream_003_off00004a63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A63 24120 bytes
SHA-256: 46cd4151a5c2460ccd97a1387de108a68d80e6df4a3732c5bb037388f030d948
font_01_sfnt_off00008187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8187 17872 bytes
SHA-256: ad6b4d8381eadec3c93ad1df5f4e1279c2235c5ac1e30c542200a475642cf7e3

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