Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5f5da726f0bbca…

MALICIOUS

PDF

48.1 KB Created: 2021-05-17 22:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9588c3a2ca0d956047924be6d892779 SHA-1: c1b3b48e2a2b17ee7e2ba0554dea949f9b3d6a3d SHA-256: 8f5f5da726f0bbca034ca9fe11186275d62630ad3545baa7f73e592c024669ee
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 'free coins'. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-coins--game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/406889139/coin-master-free-coins--game-hack In PDF document text
    • http://fccsms.com/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://fccsms.com/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://fccsms.com/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://fccsms.com/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4F 31764 bytes
SHA-256: 1a91a77e237305655a1cb456598e1bbe9c14784065b8a3cc1ca3477898265cac
font_01_sfnt_off0000915e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B48 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e

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