Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5b8244cf0e6a63…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 10:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: da3b3e1967d089cc5d7c12d959f84962 SHA-1: 175670acf8767227253ec7a36e80668a040b932a SHA-256: 1a5b8244cf0e6a63b5beaa612ff28ccd4042e145c12b88c17179e9f657fc1f2d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, luring users with promises of 'free Robux' and 'game hacks'. These links redirect to external websites, one of which is identified as a malicious redirector. The document's structure and content strongly suggest it is designed to lead users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/microsoft-free-robux-game-hack PDF link annotation
    • https://elibrary.stp-aviasi.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-earn-free-robux_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
stream_004_off0000509f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509F 24760 bytes
SHA-256: 02bbe8cd96d5944314aea9e5fc515c81bee28df1e02f56e2d7c68f0f1b13e5b9
font_01_sfnt_off00008947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8947 18436 bytes
SHA-256: fc8058b2753a804d67589ad9e7736472a77fa92b8b7356ad3bc1ab00ed4087a5

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