Malicious PDF — malware analysis report

Static analysis result for SHA-256 b17329d70845bf8a…

MALICIOUS

PDF

46.9 KB Created: 2021-06-04 03:40:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: abd9c5b3d4fb534767cebcba41588b0d SHA-1: 11086147cb2204015dead417b7530a1e54ec1214 SHA-256: b17329d70845bf8ac5a1e12f697b52bf27c08951c4aaedec7659939f129885ec
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 0.9769

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 https://netcdn.online/app/479516143/minecraft-games-to-play-for-free-game-hack PDF link annotation
    • http://lc.pustaka.unand.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-generator-november-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5003 25976 bytes
SHA-256: 95390e287db9c76a656c02be1dad7df8a814dbdf9116c5792b0ad167c3951d5a
font_01_sfnt_off000089ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AD 3092 bytes
SHA-256: 1aa0e4457f2fdbd20c643bc065edafaa683fd9dc2930c01c4492bce0fd9a7f02
font_02_sfnt_off00009459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9459 18380 bytes
SHA-256: e4e6021f190597b5ba2cc648d82e873dd3d7a425745f666e69b81b8efe23a832

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