Malicious PDF — malware analysis report

Static analysis result for SHA-256 261e9fa459a52379…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 23:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bcc131be20484beaf803a827636cd643 SHA-1: e7b832fc3d56ea372f76790a64e6334dcb614639 SHA-256: 261e9fa459a523792a444f644de547e43735365124f51b3bd6dcdbf75252be52
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-get-minecraft-for-free-on-android-game-hack PDF link annotation
    • http://alexandrion.com/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://alexandrion.com/images/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://alexandrion.com/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://alexandrion.com/images/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://alexandrion.com/images/free-robux-sites-2021_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
font_00_sfnt_off00003587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3587 24896 bytes
SHA-256: 4f59228c8c585a6c83c21f52ade6de15be580e320ee43c15a40e823941d70bb1
font_01_sfnt_off00006d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 18048 bytes
SHA-256: 8059851acc98585c267d1a0730441da2490f7a27bb6efaac05b05bf58a4bb166

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