Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f56b168a79fea0…

MALICIOUS

PDF

46.1 KB Created: 2021-06-13 16:40:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2c2f46f6e46877c346b78215aaacf4a9 SHA-1: 887195a7d3ea6b421a7085eddc7b78f2d135312f SHA-256: 97f56b168a79fea022ffbb20b8899e0853bf5028d26324e8914a5044858d2fbe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains heuristics indicating it is a brand-impersonation credential phishing lure, specifically impersonating Amazon. It directs users to a URL hosted on 'netcdn.co' which is unrelated to the impersonated brand, suggesting a deceptive download or exploit. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-use-cheat-engine-on-roblox-undetected-game-hack.
  • 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.co/app/431946152/how-to-use-cheat-engine-on-roblox-undetected-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7//repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hoew-to-fly-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/cheat-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-15-free-spin-link-of-last-5-days_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
stream_004_off000052e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E3 25832 bytes
SHA-256: 600dbff90fca9ed0bcd745d72a0070861be0869390c2552899922786dc163b4c
font_01_sfnt_off00008ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE9 19216 bytes
SHA-256: 806f5f90b9324ce416abf9efda0bb293bbbd47a62d45e3e4f5a27252d2614ed1

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