Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f55258a5cec891…

MALICIOUS

PDF

38.3 KB Created: 2021-05-21 18:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 908b585b54ecd2eeedba9668e8a81a50 SHA-1: 48975ba31f1d9477649428dc74270c2feffa32c8 SHA-256: c0f55258a5cec891f353cce7e6ca6347a9895fcb2bbfae21b2c60d0654b92a34
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 0.9407

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 https://netcdn.xyz/app/431946152/free-robux-glitch-game-hack PDF link annotation
    • http://www.dciprotection.ca/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/can-you-get-free-robux-on-roblox_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
stream_002_off000032b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B3 28508 bytes
SHA-256: d302489ec78ce00922d439ca1069f918b38306102c9d084fda9a8139f37c29b7
font_01_sfnt_off00007401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 18476 bytes
SHA-256: f765832fecc9da479c67465a8abf2ce33ee435527d5ee59b7236f6265686440b

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