Malicious PDF — malware analysis report

Static analysis result for SHA-256 809e90c372357a24…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 12:22:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b2809b01011350db44be123369e9b682 SHA-1: a9a1887e391bf91f1c67d0eac622528bfe5e2c71 SHA-256: 809e90c372357a24616c46c270c2e448e2d938ddc870ea0f6f9bbd2c2797ab3c
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-roblox-music-2021-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/hack-roblox-jailbreak-2021-mega_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-pokemon-brick-bronze-hacked_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-scp-containment-breach-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-roblox-to-get-free-builders-club_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-without-tix_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-robux-hack-mobile_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-rust-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-generator-2021-no-information_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-games-to-play-for-free_GM479516143.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_off00002f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F61 22608 bytes
SHA-256: 0201e6b07d7e542536397b180d4fe198e1c900e43f035f42abbc24abcf477c76
font_01_sfnt_off000061ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AE 19776 bytes
SHA-256: b0d797b660ae4929e5fdf04028f458d5b94c36a8b2688591141851d9910b2127

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