Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86f0f4a6a787a25…

MALICIOUS

PDF

34.9 KB Created: 2021-07-07 16:14:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 18eaeef188c7319bdd694414a2356bcd SHA-1: 53c843173942b07f8e646b70596f774955621332 SHA-256: e86f0f4a6a787a2567bb0f6075581981d24621c7b36a354d9087fa14bfe12983
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free currency to entice users. It contains multiple links, including a critical one to http://netcdn.tw/app/406889139/coin-master-free-2021-spin-link-game-hack, which is identified as a malicious redirector. The document's structure and embedded links suggest it is designed to lead users to potentially malicious content or further download sites.

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/coin-master-free-2021-spin-link-game-hack In PDF document text
    • http://xenonsvjetla.com/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-john-doe-hacker_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/easy-hacks-online-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/where-can-i-get-free-spins-for-coin-master_GM406889139.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_002_off000030ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AC 22864 bytes
SHA-256: c520ebfc49d31c9c66d4d97a822ae3fbc8c2af5c082f61302f3c32d6f40324e6
font_01_sfnt_off00006429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 18748 bytes
SHA-256: 96324e6ce0c81689c6b9eecc120e41c8c4a64b67d53a9c8495a7c5a7aa900936

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