Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b1a145d7e2eaa7…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 20:36:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 83fc47dc56c7dc3b94b76aa38efb3980 SHA-1: 80a01b382de1dc673fdb77d26534b9dd1e9f7bec SHA-256: 57b1a145d7e2eaa75909623f41000d6ae5bec5ccd6a39059dae003fd84409a87
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-pet-snacks-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/how-to-get-free-robux-without-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/games-on-roblox-where-you-win-a-free-rixe_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pastbin-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-pvp-hacks_GM479516143.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_off0000302d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302D 22340 bytes
SHA-256: 8bd8ceb2f114e7eeae3d5b1202c67e879e9f6900122a8782fd6e570766e4a96d
font_01_sfnt_off000061b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 18320 bytes
SHA-256: 70b721ff8e84e5e3b63fc5a4a42e5159d74764d5659d2c470f477e43d1d853e9

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