Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed66fd0035a6094b…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 06:44:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5b8d4f0da047f9c8b50fc8a8c2eb5ae2 SHA-1: a9b2cc5ff1af4683897279ad3d1364852022d62e SHA-256: ed66fd0035a6094bd0f86cd1adde2bb8fd6193a6e8f93c8ea4549ff360f02606
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'free game hack' and presents a visual download button, indicating a phishing or social engineering attempt. The embedded URL points to a suspicious domain, likely serving a second-stage payload. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox-spiderman-mask-free-game-hack PDF link annotation
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/supreme-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/impe-kako-dobiti-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hack-millions-of-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-robux-generator-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hack-roblox-apk-pc_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/pubg-uc-ykleme-perdigital_GM1330123889.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/pubg-uc-voucher-code_GM1330123889.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-free-admin-gear-codes_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-hack-explot_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-minecraft-skins-pc_GM479516143.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_off00002edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDD 22312 bytes
SHA-256: 02af6a12cc45b242f0d3e044cbcf218ccb6d9a7fdb20dff927b0228f81c33262
font_01_sfnt_off00005ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF7 19748 bytes
SHA-256: 581c3a76049761a5fdb3cb41fbecc3d7fc44d9efdea7f3f230c43bcb689612ec

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