Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d3b1e3d907e77a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 00:35:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3a06bc1345b0954461d4f40b4123b31a SHA-1: 460e36cd4171b5ba5d8acbc9c4997c541452b6fa SHA-256: a7d3b1e3d907e77ab7d6c1f7ccbaa0431c9749c21fdca13be65b8dd51febf1be
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.tw/app/431946152/free-robux-card-codes-game-hack PDF link annotation
    • https://lib.insan-unggul.ac.id/repository/roblox-how-to-hack-with-ceat-engine_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/hack-roblox-net_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/code-2021-robux-free-daily_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-for-videos_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-how-to-remove-your-head-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/wie-kann-man-ihn-roblox-hacken_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-robux-fast-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/learn-roblox-lua-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/hacked-roblox-account-username-and-password-with-karambit-in-cbro_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/hack-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/hacks-para-db-rage-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-guest-shirt-free-2021_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_off00002f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F75 23492 bytes
SHA-256: 6c0b7c02e58329e7410368c072f7bf35c9f9f0098400063ba00269ec7eeed3f1
font_01_sfnt_off00006468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

Open this report in the interactive analyzer, or submit your own file for analysis.