Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a10d429c3209e4…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 10:22:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2e28feddab4df662c6569c3bc8e277da SHA-1: 4ff4930225cd3b0446212c230d274448d93e6fe7 SHA-256: c6a10d429c3209e47e7aa0fb279200c1d3611621af050648e23a709c2f24e317
82 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/how-do-i-get-robux-on-roblox-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-use-cheat-engine-62-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-hack-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/javascript-code-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-mobile-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/sentinel-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-come_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_off00003265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3265 23028 bytes
SHA-256: 888458d6381e274f642ecd2913bf79d8753a57be94c01187c5b572a349f4db33
font_01_sfnt_off0000663d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663D 19060 bytes
SHA-256: b0fa18733e6a070784d304436149cec6c427497940c18f93e8b4c16e88d08469

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