Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9989a103d6ccf6d…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 00:28:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d21a3bd474893739230d11ea6322190f SHA-1: 09f560f83855f0555dffc6341fad3e36ba46b7e2 SHA-256: b9989a103d6ccf6da9971330888c83a5afbc87589aad06120133b55506e79b47
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9864

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/roblox-prove-cheat-engine-game-hack PDF link annotation
    • http://sportagon.be/images/roblox-ban_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/roblox-hack-diamond_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-robux-and-obc_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/robux-come_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/hack-roblox-window_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://sportagon.be/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://sportagon.be/images/how-to-hack-roblox_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
stream_004_off00004f7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7B 28236 bytes
SHA-256: 756deae0270d725440ab7e01ff6ee24d428e9b2cd59aaf54cfa2d90945221f97
font_01_sfnt_off00008e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E96 18956 bytes
SHA-256: 373fc8f3fbea23ceb3a02612f8787ec9e2cb278c14fe77d6c12eca5eaad14313

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