Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab94115eab4209a7…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 00:10:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ab04a8835e1686b60aab2a87b3c807db SHA-1: 164ea9f637ccd42b23ba64cc4dd8830ff8fecbcb SHA-256: ab94115eab4209a7a3ab88a5e920ac8926096943ad69383a3818c7c03fcdadeb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for popular games like Roblox and Coin Master. The primary URL, http://netcdn.tw/app/431946152/7-year-old-roblox-game-hack, appears to be a redirector to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent, likely to lead users to phishing sites or download further malware.

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.tw/app/431946152/7-year-old-roblox-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/free-robux-actually-works-no-scam_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-without-doing-a-survey_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-just-freind-me_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-pin-for-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-without-robot-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-fix-roblox-studio-from-hacking_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-trade-evolution_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-apk-mod_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-clothes-code_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-space_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-no-human-verification-on-mobile_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_off000032cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CF 22808 bytes
SHA-256: edb512983c249eafd418a61ac1d25b78256e66f4b76b0aa444eb4054af1a0eeb
font_01_sfnt_off000065d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D4 18880 bytes
SHA-256: 85e4e9e0d9805ef16fec6cb3c84a8d690b5a293c59c21ae1973f218ecc3fb6d4

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