Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc19787e277c09fd…

MALICIOUS

PDF

32.9 KB Created: 2021-07-20 06:21:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad880fec78dab5e8755dfc585dd2561c SHA-1: 1be04d2b57418b3d50770ae19175d98a68e5c872 SHA-256: dc19787e277c09fde68c342c212d544e7e3d5feba6eabdd34568d8916719d4db
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux, directing users to a malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this redirection to known malicious infrastructure. The document body and embedded link structure suggest a phishing attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-match.com-free-robux-game-hack In PDF document text
    • https://mbbs.hr/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/buy-tiktok-followers-free_GM835599320.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_off00002a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6F 22336 bytes
SHA-256: 7cf1a7f65322b1938494dc79527fdf8adaab57d16164ab7edf2fd30a2b2ae5fe
font_01_sfnt_off00005c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2F 19092 bytes
SHA-256: 13625695963a426473cdec0e2122eae6fd4ea6201280efa968dfc6869c64504c

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