Malicious PDF — malware analysis report

Static analysis result for SHA-256 f949ba8cd7782fe0…

MALICIOUS

PDF

33.2 KB Created: 2021-06-25 19:50:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d3ab79369f01716b76d9be5e85514a42 SHA-1: ac28694b26f09d703dee091cb77907ab267ab200 SHA-256: f949ba8cd7782fe0ebba21e415f1bfb00c5c9cd90933c4b862b68dba7338e50a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free game hack' which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attempt to redirect the user to a site that likely hosts further malicious content or exploits.

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/free-roblox-injector-game-hack PDF link annotation
    • http://kukuck.de/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/how-to-get-robux-for-free-hacking_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/best-free-games-to-play-on-roblox_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/aimbot-for-roblox-free-for-all_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • http://kukuck.de/images/free-accounts-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/roblox-unjailbreak-hack-executor_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-robux-real-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_off00002c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C59 21940 bytes
SHA-256: d4a9f47931d6fd3ff9e97ed203dc4055c14e668dd3b2724133650e7f4290ae20
font_01_sfnt_off00005ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCB 18944 bytes
SHA-256: a46d9ddbb6334d284056799314f5e85b9d3b171abb92ec665d893bb118be9f5f

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