Malicious PDF — malware analysis report

Static analysis result for SHA-256 98eb2b0f82bbe3f7…

MALICIOUS

PDF

37.1 KB Created: 2021-05-23 01:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 19d38c353d6f44d986d7303f29403ab4 SHA-1: 27fb0c6767d42738365ffbb08ca1105a6311d4fd SHA-256: 98eb2b0f82bbe3f7c98ccf5cc30daa82dbbad873366fd92c290177b7e98bdfc5
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-pe-free-download-game-hack PDF link annotation
    • http://glll.de/images/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://glll.de/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://glll.de/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://glll.de/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://glll.de/images/robux-giver_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_off000033bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BC 25876 bytes
SHA-256: 637f6d1f655098b53df5677de2fd5ccf958b0b63667f2f6bc79768b76f497cee
font_01_sfnt_off00006f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 18444 bytes
SHA-256: 41511c969eed7dcbefdd8737ff0e878d59d6c8a64165a5defd1345ec3b98e320

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