Malicious PDF — malware analysis report

Static analysis result for SHA-256 587b740434e4f441…

MALICIOUS

PDF

46.9 KB Created: 2021-06-08 10:12:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ca3b7355ffed0854602ff2560917c2b2 SHA-1: e02cc059eab13054b70b1b935dbdd927fa057ccd SHA-256: 587b740434e4f44199c5c501b4ad1e55a5e520793f772e7af66e631b413c9539
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 entice users to click on embedded links. The primary link redirects to a known malicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/cheating-on-someone-in-roblox-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-currency_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-often-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EE 24412 bytes
SHA-256: a171f5c003f7e457c0eceb28dc1c728dd17c302913084e5c290e4c4853d5efbc
font_01_sfnt_off000088eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EB 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off0000929a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929A 18952 bytes
SHA-256: b4380466f86cd29910ca737d982e7b8d8d0d39333fc8edd8b69d883ba20b9f62

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