Malicious PDF — malware analysis report

Static analysis result for SHA-256 2466cfea1d4f65ce…

MALICIOUS

PDF

43.1 KB Created: 2021-05-15 12:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 47f69cfde04d0a702ce959a1b2e0210d SHA-1: 15bea3572518926b07bd357d90c22619aaa55923 SHA-256: 2466cfea1d4f65ce8f7ce50788cf451fa8f6ff52eff9d9f4cb4c311337f02e44
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 0.9971

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/431946152/get-free-robux-generator-game-hack PDF link annotation
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-pet-food-coin-master_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_off00004b3b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3B 25736 bytes
SHA-256: 1e99652c40e03dab0f80d181409cde25ebd1fefe9a5a0881ea71f593ffce0578
font_01_sfnt_off000085e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E9 18344 bytes
SHA-256: 3242c4573a8204327cdf084b118e3b23cfd789fa9551ab2d205e53ac9add3c4b

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