Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa65e8b1e18c4fe7…

MALICIOUS

PDF

43.4 KB Created: 2021-05-11 21:19:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f01caea10765432d652cebcb623eb846 SHA-1: 6c1ab0aa3dcaa8d0ac412f18c4cc05294165a3b9 SHA-256: aa65e8b1e18c4fe74ccb9cab54ac9346474551dc4652d15a02c5f5788a0c8df5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one identified as a malicious redirector, that promise game hacks and free items. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-tool-v1-9-download-game-hack, which is associated with a 'free generator / game hack' lure. While no scripts were explicitly extracted, the PDF structure and the nature of the links suggest a potential for further malicious activity, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-hack-tool-v1-9-download-game-hack In PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aaa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAA 25948 bytes
SHA-256: 6b590b18e14ca42c4e25d119b037b13e2ac92d8ddfd7ae5888cf6e90a91004b3
font_01_sfnt_off000085ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EC 18700 bytes
SHA-256: 9cf5927f48de073d536566d00352c45da2cff51891e4c509e4c52fd42c0e4c7a

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