Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb247c55e8a01636…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 21:56:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37fecd14c578688af8554246b918cbca SHA-1: 48f8aa35329facac83848a9356508495abc9a183 SHA-256: cb247c55e8a01636a5d9d5f7208a3be962a01e817dde4b50dcf0fa2af5993cdc
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/roblox-mad-city-hack-money-francais-saison-3-game-hack PDF link annotation
    • http://www.eptaviation.com/images/tiktok-free-movie-website_GM835599320.pdfIn PDF document text
    • http://www.eptaviation.com/images/hack-pour-level-dragon-ball-super-2-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-roblox-birthday-card_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-roblox-alts_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/is-there-an-actual-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-get-free-robux-website-and-group_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/god-mode-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-ro-ghoul-how-to-get-a-different-for-free_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/spam-click-free-robux-script-v3rmillion_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/the-easiest-way-to-get-free-robuxgrayphiny_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-minecraft-capes-no-mods_GM479516143.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
font_00_sfnt_off00002e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8A 21832 bytes
SHA-256: a574fb298d3ac2e4e39aecb596e94ab54a9d7fa36975a08b88664046863af658
font_01_sfnt_off00005eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB0 19768 bytes
SHA-256: 898f2731dc2dbbce04c0141064d145a0d3117bbe529edf10dfe038921b7e3a6e

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