Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4baacc7048ed8b…

MALICIOUS

PDF

34.0 KB Created: 2021-06-20 02:58:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4eaed846a89506244a3e039f95ffdd96 SHA-1: 127fa16714e8b61ac64f64b186f2df26f5c48891 SHA-256: ec4baacc7048ed8bed94b072824b39c16de3fb4fd02f796a3732a1d54cfe80cf
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/redeem-code-free-roblox-game-hack PDF link annotation
    • http://perpustakaan.pa-jember.go.id/repository/friendly-face-free-robloxpgn_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/royale-high-roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/can-tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-jailbreak-fire-truck-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/tiktok-free-download-apk_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/ride-line-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/pubg-mobile-uc-2021_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-cards_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
font_00_sfnt_off00002f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 21824 bytes
SHA-256: 6ce76b98ac75704ceb846baa0ade7fba23231151b1954c36f658e177af90ef46
font_01_sfnt_off00005fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAD 19084 bytes
SHA-256: 2a587945e72c9745a662ecac3b279c78f228c9698ef6b8dfdd8f8cfee17a582d

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