Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63f357e862c8841…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 17:54:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d9c42e0b5cb90caafb0c61a29eea3f50 SHA-1: 37978beff050a3cd9340007c138cea84dce35352 SHA-256: e63f357e862c8841c7148e3ba94099fa9ade3b1b329159a9c7444708dc38cc61
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.tw/app/406889139/coin-master-free-spins-youthnow-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-de-roblox-para-teletransportarse_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-robux-hack-inspect-element_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/one-piece-nightfall-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hacks-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/emperor-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-accounts-biz_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-make-free-shirts-on-roblox-without-bc_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-champion-t-shirt-and-bag-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-roblox-boy-hair_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_off00002f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F00 22740 bytes
SHA-256: eb33e0fc606d59604b52721941676d26af538b3ea8986cfa88066681b897260d
font_01_sfnt_off000061d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 18808 bytes
SHA-256: c55b3dffd290e9a0589896d87f4add06f602089722db7dbef51869cc81ac9e31

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