Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5c63663d18505e…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 23:41:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c5b20503b76fd09da0e5e087eb47afb1 SHA-1: 799fd3b4532435ebffa5192bd90a23391d3eaf9c SHA-256: fc5c63663d18505efd95705b2db9dd16633ac115727b7035369ae1a4dcfef106
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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/blox-pink-robux-free-game-hack PDF link annotation
    • https://globair.com.tw/image/data/files/1x1x1x1x1-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/robux-today_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/roblox-shred-money-hack_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/dll-injector-roblox-free_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/master-game_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/how-to-hack-into-somebodys-roblox-account_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-bc-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/fre-robux-hacks_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-free-daily-spins_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
font_00_sfnt_off00002dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD5 21404 bytes
SHA-256: b1fd7dc44a0fbf0d4f53be23d5d0832f54a4608949d49967d3b37bef6401feff
font_01_sfnt_off00005cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBF 19236 bytes
SHA-256: 6d963c1d822a08bc1abb96cac55b62bb3f347e081a60883ac392d5c6c816e908

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