Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5318ee761a9855…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 10:27:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 193accaf5ce5ea17f4033a36ef9d761b SHA-1: f3e83a423329b43a7d67c881fbae6f2a87b075f8 SHA-256: 0d5318ee761a9855d48eb810d7142400c413e4afa90eeacfc1218a3f14007365
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/egg-farm-simulator-roblox-hack-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/free-robux-adder-tool_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-t-shirt-template-free-shipping_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/red-boy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-cheat-engine-downlaod_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/event-boku-no-roblox-remastered-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-5-richest-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/pubg-uc-online-hack_GM1330123889.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_off000032aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AA 22808 bytes
SHA-256: 1d6e451527331b51d4eb41ebad9fa75646376d534c427de509b26ffd41a6d6b2
font_01_sfnt_off00006568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 19444 bytes
SHA-256: fd9e55e5045f2ce6db1c6886350a63101a87e0f7931aad39b9ebd78c607fdea9

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