Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16c7a426378a669…

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 17:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 73df531a00595977afeb24c243620d2d SHA-1: 693c55dc8bb28a2ef5159992a510ef8f7564b1ba SHA-256: a16c7a426378a6696bc1bde02d559e35ea4f72a9537f5cb6dafb33b99697d989
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 https://netcdn.xyz/app/431946152/roblox-army-free-robux-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/freecoins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hack-generator_GM431946152.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_off000048a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A2 31240 bytes
SHA-256: b32262d96699d15aadc0a82e794ac7c90cba55a2501ddeeb57c1ac539180aee1
font_01_sfnt_off00009000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9000 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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