Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd5c91bb610f5ad…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 16:37:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b189860847bf3b71992742a8750115dd SHA-1: a2fe153e528d9e79904832f18c6a2deaaffe0f46 SHA-256: 6cd5c91bb610f5adaa1c783d58c9cea81de0a812da06e6513a007f1afa40dc99
82 Risk Score

Malware Insights

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

This PDF document employs a lure related to free game currency and hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button heuristic further supports this. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to exploit user interest in game cheats to redirect them to potentially harmful content.

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/431946152/2021-how-to-get-free-robux-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-robux-for-free-on-pc-without-downloading_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-promo-codes-2021-july-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-obc-lifetime-code-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hacking-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-jailbreak-hack-auto-rob_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-gewt-free-roblox-stuff_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/microsoft-bing-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
font_00_sfnt_off00003015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3015 22012 bytes
SHA-256: baa1beb65ec595c267b2d14ffd40df9a858b34ebb4c0ed135979c182f5c7238a
font_01_sfnt_off000060c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C1 19384 bytes
SHA-256: 8d40db4da657ecdc3f27bef1aa3790d5e2bb65efea8dcbe0e56fd44a6c318096

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