Malicious PDF — malware analysis report

Static analysis result for SHA-256 2895512dbf13757f…

MALICIOUS

PDF

46.9 KB Created: 2021-05-10 16:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c72f1be89c818320964e77ea593cebe1 SHA-1: a27f26aa5d3855737b064fa2fef8e11ceb4a8fa2 SHA-256: 2895512dbf13757ffdbf8280a2d124a03dba60f5c7f27335e1690d59b3ef6fd2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file 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 0.8948

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/431946152/robloxhero.xyz-free-robux-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.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
font_00_sfnt_off000046ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46EA 28008 bytes
SHA-256: 65ee5b2f11c4d70046a41483d9c98e73a4b93872a986436bf051b37a3a9e9688
font_01_sfnt_off00008726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8726 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9437 18584 bytes
SHA-256: d96645d743d7bc7e16305d404e9ae036d13b2ec1544ce4a3e073a2af54c3cd1e

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