Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd42a3cadb2783b9…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 08:09:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3b979b97f3ca18814e4e88ff4bf0ac4d SHA-1: 1567482c734389cc255c089ad1fe182a07b90e2a SHA-256: fd42a3cadb2783b957e44e7d05fe686ef2f540050cafac2c3279c73c235a5bc9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious downloads. The embedded URL and the document body both point to this lure, suggesting the primary purpose is to trick users into visiting a site that likely hosts malware. No scripts were extracted, but the PDF structure and linked URL are strong indicators of a downloader or redirector.

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/479516143/wizard-hacks-game-hack PDF link annotation
    • https://perpustakaan.urindo.ac.id/repository/roblox-free-injector-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/notoriety-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/auto-clicker-for-mac-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off000030f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F1 22548 bytes
SHA-256: 76639830e7f2f5ce3327ef793d758ec1377e7ed8bc09ed790dd8c135b49d795c
font_01_sfnt_off00006328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 18376 bytes
SHA-256: f665832626808531659451e28624cfd6690abe3ebc4486c0e184f15273d13575

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