Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b9133963d7fa8d…

MALICIOUS

PDF

39.7 KB Created: 2021-05-21 04:20:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1663bc4d4be19843bbcef8b6a1cddceb SHA-1: 4839d365536eeba3e9cd111ee41a1e8dd63b622a SHA-256: f9b9133963d7fa8deeb9f5ca59dc755d4bd56e752ad3512df281eaca26807d99
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 0.8060

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/431946152/roblox-hair-for-free-game-hack PDF link annotation
    • http://easytransferbrazil.com/images/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://easytransferbrazil.com/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://easytransferbrazil.com/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://easytransferbrazil.com/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://easytransferbrazil.com/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3289 26528 bytes
SHA-256: a46f98c756cfb0ae9ca6db94290b915701f6607e3a86729dc28aa8ceecfeab36
font_01_sfnt_off00006fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 2836 bytes
SHA-256: fd98c8f6e7c2e74bbd5822409159a93ac5c94da083ae4c2eb269d4284375f9e8
font_02_sfnt_off0000798f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798F 18296 bytes
SHA-256: 071abe11bc505b6fd5896db9ed6c4248165c6521bf389675a89e7515009c04ca

Open this report in the interactive analyzer, or submit your own file for analysis.