Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e6e2df2ff686ce…

MALICIOUS

PDF

44.2 KB Created: 2021-06-09 04:07:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0a90ca2a58ee362013e01e6696b53910 SHA-1: 40b209dd8f1647f182f1d63f14399beda471676b SHA-256: d2e6e2df2ff686ce6d5bea34e356e3b6165bcd2b357a822456f1e3097d02cacb
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to trick the user into interacting with it, likely to initiate a download. The embedded URL points to a resource that claims to offer free Robux, a common lure for malicious content. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to exploit user interaction and potentially lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/genarater-that-gives-free-robux-game-hack PDF link annotation
    • http://www.ma-plast.hr/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/beach-house-roleplay-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.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_off0000509c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x509C 24584 bytes
SHA-256: 851a984977075db74ea775b0a3548127ad1c22362a686819e49f2eb4e15e6b7d
font_01_sfnt_off000088cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CD 18748 bytes
SHA-256: 1517a70fb15dcc7b96df4ff3856dbc70f892fc0d3e95488a0e204725710504ae

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