Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bdae39ed37ae73…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 11:06:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 49e89ae632ca546195cac0dcefc4e337 SHA-1: aa54bf0f30ad7134e95a329ad7a85a76f93206c6 SHA-256: c2bdae39ed37ae7338552d534646f0c6dd10903009cadac7fc3c486c2d08085c
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 0.9769

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/today-coin-master-free-coins-link-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/robux-hack-no-human-verification-for-android_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-royale-high-school-diamond-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000525f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525F 24596 bytes
SHA-256: 05c1d616552c28a8a9c3c36cebc044bc27babcb83afaa6b83988db90ab39b6f2
font_01_sfnt_off00008b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000094f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F8 18232 bytes
SHA-256: 1c180deade05dd65faa90c9140eaad93d598bc72d335cb638659863cfa25ddf2

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