Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f945e392dcdf5ab…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 17:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0406a07eccfd1dc5a8ba03433aa3746a SHA-1: 0b827611f88e530f56333ca6788686de7a6377ad SHA-256: 2f945e392dcdf5abdde3d10a886648e5095554f338c83374004cc353d00be6c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and generators, as indicated by the document body and heuristic firings. It contains multiple embedded URLs that redirect to external sites, likely to download further malicious content or phish for user credentials. The ML classifier also strongly indicated maliciousness.

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/431946152/roblox-preschool-free-game-hack PDF link annotation
    • https://maths-pdf.fr/ckfinder/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-wheel-spin_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/roblox-hack-robux-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/is-ahmad20218-being-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 22188 bytes
SHA-256: 520321ea36df4b41baf10e6db4b88923d7778d8df9fc7ede4540ba41b4a13811
font_01_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 18972 bytes
SHA-256: 32c76a82d4ba0cb73c5af87b0adef701875a66fb32da235eb136600ead822c8b

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