Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0dcf9560fe87b4…

MALICIOUS

PDF

37.5 KB Created: 2021-05-21 08:18:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 14ef88fc9c77f29d738b8d9916dac6f2 SHA-1: 88d104a8ddc2861887658985339cf28f3f0d5346 SHA-256: fe0dcf9560fe87b4d0e269069f1927eab3d72c4f93b0a4de2c1973471f35b300
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 0.9447

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/479516143/play-minecraft-online-free-game-hack PDF link annotation
    • http://paro.net.ua/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-get-free-robux-without-downloading-apps_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_off0000322c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x322C 29408 bytes
SHA-256: 772f5bf94e92771be9abced7601e96b7f82a9100ab050ddaf229ff5a6ce8bf75
font_01_sfnt_off00007249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7249 17976 bytes
SHA-256: e953997c623ab1bd3546e7b188ca680e36d1015a1cf7f46efbbf98890a47325d

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