Malicious PDF — malware analysis report

Static analysis result for SHA-256 63db212e33f7951c…

MALICIOUS

PDF

36.7 KB Created: 2021-07-09 00:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a7442132ec5d5794af41a2a825cc73fa SHA-1: dc77d24c9a9da7230bcbe8c9959849b1e4a613ba SHA-256: 63db212e33f7951c5a318dd7e2c6f6a65b9cdf53131b1291797d0048cc9ba85a
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. It contains multiple links, with a primary link pointing to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-game-free-play-online-game-hack. The document's structure and embedded links suggest it is designed to lead users to potentially harmful external sites, likely for further exploitation or malware delivery.

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-game-free-play-online-game-hack In PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-how-to-get-free-gears_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-assassin-cheat-codes_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-robux-for-free-2021-july_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-jailbreak-geld-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-hack-the-underground-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-roblox-synapse_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-boxing-game-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-online-minecraft-server_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
font_00_sfnt_off0000388c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x388C 22912 bytes
SHA-256: 3d736505c28607385a6d5f3e97ddef381488152908cf37756e1ab30cbbed0360
font_01_sfnt_off00006be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE3 18664 bytes
SHA-256: 6cf81a4836f43e6865da5e830d1e059b8f471d909c0cfb59af40a3dbe760999e

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