Malicious PDF — malware analysis report

Static analysis result for SHA-256 f102671459a9f475…

MALICIOUS

PDF

34.0 KB Created: 2021-07-19 05:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: db0eb2f37a05e3af406e25a7ea10a325 SHA-1: 5421b026839012664690096b74eedfdd4b1ebda0 SHA-256: f102671459a9f475156d41fe9c3efaa5a93528d2a70294fd9a789cc8f6634018
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" which redirects to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and a visual call-to-action button suggests a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/how-to-get-free-robux-for-kids-game-hack PDF link annotation
    • http://iacfhouston.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iacfhouston.com/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://iacfhouston.com/images/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://iacfhouston.com/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://iacfhouston.com/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://iacfhouston.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://iacfhouston.com/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://iacfhouston.com/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://iacfhouston.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://iacfhouston.com/images/minecraft-realms-free_GM479516143.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_off00002e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E16 22908 bytes
SHA-256: 619b6cec4a4ec834dc23b9177c53b66d506e77f45196b6dea1b31e2f363df8e6
font_01_sfnt_off00006139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6139 18764 bytes
SHA-256: d079bf469505872766dd14d06cf0fce057ad6bb15d7e0a6d6ef53e681c132249

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