Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4db3411a162295…

MALICIOUS

PDF

45.0 KB Created: 2021-06-04 02:45:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8ffae852e02e14074227a42087bd8b65 SHA-1: fb8309bec58d20ddb6a3ab331c8e95830b31eaa9 SHA-256: 1f4db3411a162295a277b32deb6c2e9a07e3c1635cebdf3614a2bba72d2b97d8
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 0.9865

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/431946152/how-to-earn-free-robux-game-hack PDF link annotation
    • http://perpustakaan.pn-tilamuta.go.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/tiktok-free-view-iphone-theme_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/free-pe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tilamuta.go.id/repository/coin-master-free-food-for-pet_GM406889139.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_off00005411.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5411 24724 bytes
SHA-256: 8085179c44a7391337e2edf1781da025540ad0fbfc554d9dfd3abfadc71aeea0
font_01_sfnt_off00008d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D23 18404 bytes
SHA-256: 14292e34eda5b41bb4f7162ff4266963adc8cc9da2edd2eb943feb3a845ce32e

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