Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b564bccebdb70c…

MALICIOUS

PDF

32.9 KB Created: 2021-07-19 16:01:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e4fd36572bc942fa09893022ff918f0 SHA-1: 5251c57b513e1feff221a65e2a58009af502fe8b SHA-256: b0b564bccebdb70cccb46385fa34d3c321f14dfe2a40bf0edf450f1096f9db51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for free Robux and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a call-to-action button reinforces the malicious intent. The document likely serves as a dropper or redirector to a malicious website.

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/codes-to-get-free-robux-game-hack PDF link annotation
    • https://sanjoseelectricians.net/images/free-robux-group_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-free-download-windows-10_GM479516143.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_off00002c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C80 22224 bytes
SHA-256: 5732befb5dd4467470df53a90eb969e5ce1e2b741a36fc9f918674691fdfac72
font_01_sfnt_off00005dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD7 18480 bytes
SHA-256: d8df780dd9152f792ca5811d4d2bf8cc7bec42c2ad4f1fc57a29b955cb4b066b

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