Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb52b0787a061bf…

MALICIOUS

PDF

44.1 KB Created: 2021-05-14 23:17:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a52a2c93f736e9902adb53977fa74689 SHA-1: 809b4010efcdb133da43e0ed47782fafd10ed05b SHA-256: 4bb52b0787a061bf56c61e874000051860328a28647ec212520a5227f3cf1e8a
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 0.9976

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/406889139/hack-coin-master-android-2021-game-hack PDF link annotation
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.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
stream_003_off00004ed2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED2 24440 bytes
SHA-256: ecbb668a00fcff247a762163cb3484228f9d31b2e1a413bb2a0515b4dd3dd7d0
font_01_sfnt_off000086a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A5 19444 bytes
SHA-256: dd0f29080c9cadf61259fe2f03e0a696cc22fb648d6a965820761034c454ed90

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