Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5f566c78db28c1…

MALICIOUS

PDF

32.9 KB Created: 2021-07-20 15:54:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e0d6945a057f01dfb20b304244408340 SHA-1: 10cfbf352f08576584e9a1064165abaf19f17120 SHA-256: 7d5f566c78db28c1730a627a8cfc914ccba572199ae9f22342e884a32d7e6b1b
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 0.9900

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 http://netcdn.tw/app/431946152/free-robux-2021-game-hack PDF link annotation
    • http://centralbasinroofing.com/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://centralbasinroofing.com/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://centralbasinroofing.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://centralbasinroofing.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://centralbasinroofing.com/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://centralbasinroofing.com/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://centralbasinroofing.com/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://centralbasinroofing.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://centralbasinroofing.com/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://centralbasinroofing.com/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B06 22496 bytes
SHA-256: 6a7ab95450ec90295fb9502007a0c34723a6f52d6e90f6deced5e9bea3813237
font_01_sfnt_off00005d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7A 18600 bytes
SHA-256: a2c5ceeb34a0fdda65f6d16b67831e7179df071a1f7dc46648d6724acc442c88

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