Malicious PDF — malware analysis report

Static analysis result for SHA-256 622eabf46b1866bc…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 08:38:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 339cf57d51c58169340f299537f914ed SHA-1: 10a6533931b0b8dfa00bb1e3e917c50dca48b274 SHA-256: 622eabf46b1866bc9b3d998d1548418483ec2dbf7b1c2d85afbad00c70fc33c4
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.tw/app/406889139/hack-coin-master-without-human-verification-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/roblox-vehicler-simulator-afk-money-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-obc-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-client_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-script-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-on-roblox-2021-android_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hacking-the-condo-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-hack-with-nothing_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-roblox-hack-proof-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/9-billion-robux-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.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_off00002fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FED 22308 bytes
SHA-256: 52775745d1efaa02d55dc14bd7a673c8a484538f9d2ff54da443fcd8aa50c4c7
font_01_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 18904 bytes
SHA-256: 082fc6b2b71f7ea5548029beb597447fa73794cbf09ea5a46efd6265d0e30084

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