Malicious PDF — malware analysis report

Static analysis result for SHA-256 39de996f043095cc…

MALICIOUS

PDF

45.3 KB Created: 2021-06-04 05:19:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 88c36168977cd53462f7db7d8f306de6 SHA-1: 678f3224fdc8847160c28f0db954e8ba6f52294e SHA-256: 39de996f043095cc559fb587c166aba53f00c58d1ec5d1491efd83f1fa32dd9f
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 0.9864

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/406889139/coin-master-free-spin-link-new-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-free-minecraft_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/server-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005199.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5199 25252 bytes
SHA-256: 0f3d95c3f79a5ec34075231cf4678c577dca455efc147c39c321d46a71abc5e3
font_01_sfnt_off00008b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1F 19384 bytes
SHA-256: 1eef893d776472e08195e18d09fcbee46e05d0d921c4d8a591c435f3b9818dd8

Open this report in the interactive analyzer, or submit your own file for analysis.