Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed169900f8e62f7e…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 13:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91490b1d7643cc67bf4d8f51e26343af SHA-1: 8af46e6190e9b9dfabe47d1de66481c232f572df SHA-256: ed169900f8e62f7eeac791eec6a472293dd7e634749ab28a433e6a7d86ffe135
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 0.9969

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/479516143/minecraft-pe-hacks-2021-game-hack PDF link annotation
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.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
stream_003_off00004e65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E65 25124 bytes
SHA-256: bea4230fd62aab1bf2d8ef0a040398eccbf833d0c3fa9f62163fd6675bd54caf
font_01_sfnt_off0000876a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876A 18296 bytes
SHA-256: 928fda8d6cdf740c8aa958f6e9db818f0cdae9318cc1084247adea2ad4ad4e6f

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