Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5980e921c42b980…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 11:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 54744ce835e051ed058cc1c6ff50f27f SHA-1: ddc1392e7783ac8484f902a352f2d35e62bde8f0 SHA-256: b5980e921c42b980b4729f5c0d9a7007bf3273e3dea59d6b2b8d6ddec879731d
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/can-you-get-minecraft-for-free-on-pc-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/rbx-website_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hack-activegamer_GM406889139.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_off000034ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AD 25060 bytes
SHA-256: 36c8a0fc46f0af00a50f3774312797b720f24c05080dd7804c4261d4a9b6cb01
font_01_sfnt_off00006d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D26 18164 bytes
SHA-256: 8ea32a8e02995d89b02eafa4dcf94783bb214565530167096c35ff51f311a6e6

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