Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade0e952cd84636b…

MALICIOUS

PDF

44.1 KB Created: 2021-06-09 08:01:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bbc60035e5d842772466208e21aaa5f6 SHA-1: db261bef5d2432083d6cf5c715822b33690029c5 SHA-256: ade0e952cd84636b63898fccf4b630254f2e7e7e30ad1946a966a0422b0fabd2
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.tw/app/431946152/bandicam-hack-roblox-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/pubg-uc-zam_GM1330123889.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-sued_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-gift-link-2021_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_off00004d79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D79 27012 bytes
SHA-256: 497902ea7a14ac16c8b6c2f59814746bdf91dea4e790332737b83e578c2bb6d0
font_01_sfnt_off00008862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8862 18736 bytes
SHA-256: 67877b26d1d50df61e4ceed650ac33f72a438fe45b98a17a953120083cd8e9b2

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