PDF static analysis report

Static analysis result for SHA-256 ee8812e3d0c696f7…

SUSPICIOUS

PDF

46.3 KB Created: 2021-06-07 21:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 53a4fe74a73880a8f08e5a689772f7f2 SHA-1: da78d6b6b68583570d67bb5e9f1fbac284a9ea66 SHA-256: ee8812e3d0c696f77cb7e32044f30df7767ed4d8e27a56e8f8781f699048cfe2
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a document body that explicitly advertises a 'Free Robux Generator Activation Code', indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it is designed to redirect users to download further content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it acts as a dropper or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 3

  • 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.tw/app/431946152/free-robux-generator-activation-code-game-hack PDF link annotation
    • http://zercalo.org/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/instant-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/free-roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/works-how-to-get-free-robux-2021-fast-amp_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/tiktok-free-upload_GM835599320.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_004_off00004fc2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC2 28128 bytes
SHA-256: 5a10fb59471ad4e9fb35f3e5587ed725ad51a9864744dc395281db31790c4ea6
font_01_sfnt_off00009112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9112 18756 bytes
SHA-256: 044fddd1f2ee690a4aa74b1b13f705318174107a1226427d460b27f391fbc26b

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