Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ccea8100fa8e4c…

MALICIOUS

PDF

36.7 KB Created: 2021-05-20 16:44:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8afe92cf7e787ced9d8778aa42697e62 SHA-1: 20d55440b9a4c311780b8f43d90c174d533fd8b3 SHA-256: 70ccea8100fa8e4c7a71e59357985387f009d8fee5e354d7dff7df5f3516ebd2
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/minecraft-free-version-game-hack PDF link annotation
    • https://alanachanger.com/ckfinder/userfiles/files/coinmaster_GM406889139.pdfIn PDF document text
    • https://alanachanger.com/ckfinder/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://alanachanger.com/ckfinder/userfiles/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://alanachanger.com/ckfinder/userfiles/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://alanachanger.com/ckfinder/userfiles/files/roblox-data-breach_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_off00003443.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3443 25800 bytes
SHA-256: 62f31c013380607f10fecaa7c7e9c8411fca64a041e8eb6cce9001b9432ebba2
font_01_sfnt_off00006f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F74 17844 bytes
SHA-256: f3924605f7b3f22f10abcb19e882a5c4663272546a5aeaf73baf968c6ecbf21f

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