Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9866d9cc07d27e2…

MALICIOUS

PDF

46.2 KB Created: 2021-05-15 03:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 38d8856a2bc04a7ddab2e994d68a1c13 SHA-1: 808154cea06110dc803e5cb759a17c11ba2e835d SHA-256: f9866d9cc07d27e270d1a94d8e57a62ec59c59cc9e8b0f5982e17195c69bab8d
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 0.9432

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/websites-that-give-free-robux-game-hack PDF link annotation
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FE 27320 bytes
SHA-256: 01367496a3000945e625b512f89e890f670740cb50bcdb028bbf6ad4c758ca9c
font_01_sfnt_off0000864d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864D 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFB 18944 bytes
SHA-256: 78a0fcf68a5d31112d03f33f6a87e59a8dd4ec5e5d54fb5213929ff381de215f

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