Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b6e79be8a58173…

MALICIOUS

PDF

36.4 KB Created: 2021-06-18 16:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9dc441f63bb6406d4ebdc9c81904fe1f SHA-1: bcc2caded248a14b1f994031bd2d73bb9742bd3e SHA-256: 03b6e79be8a5817349364426b873bb8b016d632c5cd24f17259c8436f81f90a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/medieval-hood-of-mystery-roblox-free-game-hack. The document body and embedded links suggest a lure for game hacks or free items, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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/medieval-hood-of-mystery-roblox-free-game-hack In PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-with-only-one-human-verification_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/working-cheat-engine-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-hack-into-the-big-brother-house-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/cheats-fro-csgo-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/youtube-cheat-central-robux-july2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-roblox-items-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-iron-man-suit-free_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-codes-for-free-stuff-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/https-www-roblox-hack-account_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-how-to-get-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/video-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-roblox-on-computo_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/btools-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-script-executor-free-download_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-free-shirt-in-roblox-2021_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_off00003598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3598 22856 bytes
SHA-256: d7e2887bed8ef41d398da4fb83f4ca992a185bf1f1b85ce3ba0c42299a28b4db
font_01_sfnt_off00006894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6894 19352 bytes
SHA-256: b8c95e94212b0bf79409111bf0ba8e035812b60657b6c58f5fc68954fdae83ba

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