Malicious PDF — malware analysis report

Static analysis result for SHA-256 82059b0f07c534a4…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 14:19:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e3037ebcfe332c6553d8790b5dd9587 SHA-1: 2c4827fb37098e6695d8b4fa23f23d781d77b729 SHA-256: 82059b0f07c534a45dc97d1f848f2b5f60f51405d67c76bdfc84417642571643
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a site that likely hosts malware or further phishing content. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/coin-master-mod-version-free-download-v344-game-hack PDF link annotation
    • https://www.jonaled.com/uploaded_files/userfiles/files/10-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/roblox-jailbreak-fire-hack_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/tiktok-free-trial_GM835599320.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/superhero-city-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/pubg-uc-website_GM1330123889.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/how-to-make-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/how-to-put-in-cheat-codes-on-roblox-hospital-tycoon_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.jonaled.com/uploaded_files/userfiles/files/faces-on-roblox-that-cost-for-free_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_002_off000031b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B2 22992 bytes
SHA-256: f307ab04a2d98d32cbce9fbd511d3f9bd92a05dfb5e681c0c02ac1ac1848c13d
font_01_sfnt_off00006574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 18948 bytes
SHA-256: 20da5c72a1d03ec8b18d4a26f1a86c223fb80eec5faf3ffb84824929e40f9207

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