Malicious PDF — malware analysis report

Static analysis result for SHA-256 3021b60bf0951c48…

MALICIOUS

PDF

36.1 KB Created: 2021-06-30 02:40:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 658311b7f170947d0b84908f48de64f5 SHA-1: ab3ff913e580b6b3db65e91bd6f670245b0836d8 SHA-256: 3021b60bf0951c4809cbb14b4d02af75e0d4e6705ec12baacad3e0c9ee146be5
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/free-robux-no-human-verification-or-survey-or-download-2021-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-cbro-how-to-get-free-knife_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hacking-bugmenot_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-build-tools-on-roblox-cheating_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-get-robux-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-giftcard-codes-july-12-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pokemon-go-free-trades_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-download-roblox-intros_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/script-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-outrageous-buliders-club-for-free-in-roblox_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
font_00_sfnt_off00003213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3213 22348 bytes
SHA-256: 7b88346277bfcd1a2afefaca99ff9b3fb30c1741fb3c5b0105611b7fb7a68eeb
font_01_sfnt_off00006385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6385 20608 bytes
SHA-256: 84e083980845d6db402b7178d67bc98d29f4cdbc71d93f4e93f474fc98f39a9a

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