Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e8288b44ee878d4…

MALICIOUS

PDF

42.3 KB Created: 2021-05-18 00:31:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c39d599e2695e261866cd11d377dae96 SHA-1: ab803ce51c865a96f02fb4a1bc10b8274eff8df5 SHA-256: 5e8288b44ee878d48a7afd809c300e9b9428eeb9f1e81ff56f9bc16fb40758f2
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/free-robux-mobile-game-hack PDF link annotation
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/robux-only_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.indovisionjogja.web.id/ckfinder/userfiles/files/how-to-get-free-robux-hack_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_off000047e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E0 26080 bytes
SHA-256: 967d010b5daf68970f861f3db892bbb378c57707a6bcf20284042972e5fc0cf2
font_01_sfnt_off000082eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EB 18404 bytes
SHA-256: 0c312729e80e6e0ca2ee9f4904992f86151ccd5d23fc73e43cbe09e8497f8a48

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