Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d88303575823747…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 12:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a465c9864104c40141a1acc2e25e6a52 SHA-1: 9082ec729fde44bcebb984a948e9a08c7bcf7a4a SHA-256: 1d8830357582374749274dd9dbd0fca5946337092848c0973a2cd61a1f161958
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/431946152/comment-hacker-un-compte-roblox-2021-game-hack PDF link annotation
    • http://www.med-aid.vn/ckfinder/userfiles/files/hacking-roblox-assain_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/roblox-race-track-free_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/roblox-hack-2021-may_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/free-op-roblox-exploit-seraph-v2_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.med-aid.vn/ckfinder/userfiles/files/cute-free-roblox-clothes_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
font_00_sfnt_off00002e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E38 22144 bytes
SHA-256: 3d10ce8b7bf97db2d649ee72fc6e53538ddccc76d1fbc4e79afe7c6750888231
font_01_sfnt_off00005f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F07 19600 bytes
SHA-256: 59fcff6c4b05bcc86af61d72f13e2c861b9679c2b158be64cfef5d9a02e285c3

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