Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc961e5cc83e5ba…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 02:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3f2ba9f82f6307124db6861b30f1a77e SHA-1: 7a52a5a3ce5887b2a33537dc1830278bf3634638 SHA-256: 9cc961e5cc83e5bad9d9f5598706b682abca51b85c7483f4da65528dc9fc1a64
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-robux-money-hack-game-hack, lead to redirectors that host further malicious PDFs, indicating a multi-stage download or redirection scheme. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-robux-money-hack-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/krystal-team-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-icon-download-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-20210-robux-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/if-roblox-got-hacked_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-free-robux-not-fake-isgd-5qok6w_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/blue-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-2021-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-no-clips_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-vip-on-roblox-top-model_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-for-the-legendary-sword-rpg-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-serverside-executor-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-hack-computer_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F12 22132 bytes
SHA-256: b5712b05654de0877707be850a4dae184f92e77eb25cccef2978feae3d947f56
font_01_sfnt_off00006032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 19172 bytes
SHA-256: 1cbd3e40842eeb4e4ffa3e702af310c14e6bcfb58ee32fe4e7e89d3f0d774b77

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