Malicious PDF — malware analysis report

Static analysis result for SHA-256 771fea7b42d1e825…

MALICIOUS

PDF

38.1 KB Created: 2021-05-23 21:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 54878819e7e7c28ddad000b3c47fb160 SHA-1: 5461d3b8800d9830ffa78483b0e999ca5ff5e489 SHA-256: 771fea7b42d1e825dc058447ff9596060b7f61d1df2b934ec6f136729f43fb94
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and visual cues suggesting a download lure for "Roblox Generator". The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the primary URL leads to known malicious infrastructure. The document body explicitly mentions "Blox.pink Free Robux" and "CLICK HERE TO ACCESS ROBLOX GENERATOR", reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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 https://netcdn.xyz/app/431946152/blox.pink-free-robux-game-hack In PDF document text
    • http://unsere-beagles.de/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-free-robux-without-offers_GM431946152.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
stream_002_off0000307c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x307C 29572 bytes
SHA-256: 9f4e9bb077feb32f924946d4e0b0210148e4ba79d72cbde4dd5df6c49bccfda1
font_01_sfnt_off0000731f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 18620 bytes
SHA-256: 20ad8a2126bb9f489cd4862944fdd8c1c01869fd803457c3ce1390bedb89f69f

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