Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d6fb449bc762a1…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 05:05:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 45083a5cb07d3155621c347613c7a869 SHA-1: 156c47f027ae0d89331a1ad641137903ef100588 SHA-256: 86d6fb449bc762a1c4de048b3c8870b38ecb7762752a01db1e3d634baf7245c6
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.co/app/431946152/roblox-yin-vs-yang-hack-game-hack PDF link annotation
    • http://www.elibrary.fl.unud.ac.id/repository/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-hack-roblox-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/cheat-roblox-menu_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-in_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-hack-on-boombox-island-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-promo-codes-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/make-free-robux_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_off0000307d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307D 22760 bytes
SHA-256: e1a2f2b7262b6d50bca61ae9314b205c0376aa798d2b54abc4002fadb4f68c13
font_01_sfnt_off0000636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 19072 bytes
SHA-256: 36252fc044bd2165492ec250f7cb1371c0501cf48a9d02956168719762e5a30d

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