Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bdf48ceccae1e98…

MALICIOUS

PDF

35.9 KB Created: 2021-05-24 11:54:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c4e6cf3172e7e5b0b1b45d788e148d68 SHA-1: a9223571ee06c0ae4c33d053283921db13db87e6 SHA-256: 8bdf48ceccae1e98dd76de611a69a09351b29cd001638273b8aa27b356b5e148
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 0.9492

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/how-to-play-minecraft-for-free-on-pc-game-hack PDF link annotation
    • http://mycookingpot.com/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://mycookingpot.com/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://mycookingpot.com/images/pubg-2021-uc_GM1330123889.pdfIn PDF document text
    • http://mycookingpot.com/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://mycookingpot.com/images/aimbot-download-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_off00003393.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3393 24664 bytes
SHA-256: eabf9aaee4280fd289a4193a02c61f473b7d5d4d4137611953f43910da7fd41c
font_01_sfnt_off00006af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF8 18284 bytes
SHA-256: 805db6617afe2d237489c8bb7c2b5cc2832d34670fdae12a8b82fd0acde92e0c

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