Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5bea54902fe898…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 04:59:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6f2d1954bd679e138b597639d4163f9c SHA-1: a97d69883695b4cdc5e09add24c6e20dddf10df6 SHA-256: 8c5bea54902fe8989d85957871ff0b9ac9ba2f4226eb59c598f9a541b661144c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' which redirects to a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded URL is associated with game hacks and generators, a common social engineering tactic. No scripts were extracted, but the document's structure and embedded links suggest it is intended to trick users into visiting a potentially harmful site.

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/roblox-robux-generator-http-freerobuxgenerator-xyz-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-hack-no-human-survey_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/pubg-uc-myanmar_GM1330123889.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hack-turkey-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-2021-btools-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-menu_GM479516143.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_off000034db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DB 22176 bytes
SHA-256: 2f8aeb63d570bb311a143facc44d99516e5e60f6af7edd2b9d387f36bed02aeb
font_01_sfnt_off000065ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BA 19332 bytes
SHA-256: 3847149b477a4e2ba4f9248fde2909885d2401f9abbab2c284e38936ec39ea88

Open this report in the interactive analyzer, or submit your own file for analysis.