Malicious PDF — malware analysis report

Static analysis result for SHA-256 7841df2d65c88844…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 01:19:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6a7fba09fd11327beb731ca122cd211c SHA-1: 58b5574e2d580ae0d970512f22f6dcf562cc6484 SHA-256: 7841df2d65c888440ea63ff10836b5fcef082681cd53a77961e08edcf05c0c85
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and generators, such as 'free robux'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs strongly indicate a lure for malicious downloads or phishing. The document also mentions password instructions, suggesting it may be part of a multi-stage attack where an archive is protected by a password provided within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/obby-free-robux-elevanoz-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library//repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hacked-roblox-client_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/20210-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/doge-roblox-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-hacked-account-back-in-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/good-reasons-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-xray-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3178 22404 bytes
SHA-256: f3429aff6c362bce415690be3ae76160995b6956ed17a3ff14a0bc615d6105f2
font_01_sfnt_off00006340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 19168 bytes
SHA-256: 811cba8a2922552e163580588ab7ef7c992c13180b193ba6e8e3bc2b48cd88ca

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