Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff98cc8a688df444…

MALICIOUS

PDF

36.6 KB Created: 2021-07-03 15:12:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dfd015a2ed1cac5fcc905938c15880d2 SHA-1: 4760e530b07ad8f1cd7776b5c7bdd951b56ee5fb SHA-256: ff98cc8a688df444fa7d796450f83989883a94b73e60146220d410385734b74f
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 0.9886

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-hack-mobile-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacker-roblox-video_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hack-de-roblox-para-todos-los-juegos_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-download-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-boxing-game-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-dll-injector_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC6 22884 bytes
SHA-256: 8dccf85a7e5f762399b7917f2a9bd32f6116c3be11eb3eefa956251505834673
font_01_sfnt_off00006228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 18236 bytes
SHA-256: 6a735436479ff0aab11f95a41c40e0b9404f26c9454ddfcce58982a18e600178

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