Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7bea5327ba6c171…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 09:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7fe6459bfe832d4917ae13f52aeb41d SHA-1: 4136d08aeb61fe0b1f14439a1b7180c6048bfa47 SHA-256: b7bea5327ba6c1715deabd26bd9c94327364535677814bad116aa7842faaf040
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure URL is http://netcdn.tw/app/406889139/lastrick-com-coin-master-hack-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this theme, aiming to trick users into downloading potentially harmful content.

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.tw/app/406889139/lastrick-com-coin-master-hack-game-hack In PDF document text
    • http://razredna-nastava.net/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-a-roblox-account-2021-easy_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-mod-menu-free-download_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-configuration-roblox-robuxian_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/tiktok-free-followers-generator_GM835599320.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-virus-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/beyond-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-bc-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/best-free-roblox-clothes_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_off00002db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB0 22352 bytes
SHA-256: f19742db3d6445266d01c9c9428e6509582ebadfa6f150b7a1a74788f2886f46
font_01_sfnt_off00005f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 18264 bytes
SHA-256: 7487f1ced9a0ef44a39375eecee508f8bc18e69c364675b0881c5394564d02ce

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