Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba65258964f96d7b…

MALICIOUS

PDF

34.2 KB Created: 2021-07-10 00:13:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9dc58e0a6fae9aafa337e3f5c60fa6a4 SHA-1: 28f90ed5283aada4f2bab4a436f1a7e1b7be3f8c SHA-256: ba65258964f96d7b8f70a94ad78bc9b90782e4370b2a00fef577365eac60fde9
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/431946152/free-robux-generator-codes-game-hack PDF link annotation
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-army-robux_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-hack-exploit_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-2021-april-may_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://pariwisata.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-iphone_GM406889139.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_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 21604 bytes
SHA-256: b7a47c4d5b5f76c247653fba01fbe71af6e20611e57970955af350a615fcfa32
font_01_sfnt_off000060c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C0 18996 bytes
SHA-256: 91c816d1018d58562acf1f6be5737a46a508402ca9fb9bb64fdd640b276a109f

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