Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bef1cf50b3b688…

MALICIOUS

PDF

35.6 KB Created: 2021-06-25 18:50:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 13c9b777ccc402020bc788dd52a37167 SHA-1: de799acea707921ab9d5edb377008d39119d135c SHA-256: 09bef1cf50b3b6882691a336c82baa09494f38282ca6cef3e0695cfb53f0d9c3
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.co/app/479516143/minecraft-free-download-mac-full-version-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/pubg-uc-u-mobile_GM1330123889.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/can-you-get-free-robux-without-builders-club_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/earn-free-robux-site_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/robux-hack-tool-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-reason-2-die-money-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/logiciel-de-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/spins-gratis-coin-master-hoy_GM406889139.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_off000032de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DE 23096 bytes
SHA-256: 30de1c5686af7325eddedb1e7b4dfa2329b43aa2e35c8f0f013cc79007e5cf7e
font_01_sfnt_off000066e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 18852 bytes
SHA-256: 2f94b73c20f55047c0e2bf5ccf38d3b8da0fea58bbed4a73855ab809f4e13174

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