Malicious PDF — malware analysis report

Static analysis result for SHA-256 b027372a4b5da0e4…

MALICIOUS

PDF

117.7 KB Created: 2022-07-06 20:56:08 Authoring application: Dynamic Source Routing Protocol Tutorial alan (via FPDF 1.82) First seen: 2022-07-15
MD5: 803709a1003aca8e05074778cc82de00 SHA-1: 48d443304e8b5f3b01a40e530abd0cd09c14cf91 SHA-256: b027372a4b5da0e45d43a7f907ea6e000fc79f8b1d05ce5ba0347e4a670370c9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains multiple invisible links designed to trick the user into downloading a payload. The primary malicious URL identified is http://hypexquit.site/Dynamic-Source-Routing-Protocol-Tutorial/pdf/www.agencessaintferdinand.com. The document's structure and embedded links suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0007

Heuristics 2

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • 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://hypexquit.site/Dynamic-Source-Routing-Protocol-Tutorial/pdf/www.agencessaintferdinand.com
    • http://hypexquit.site/Dynamic-Source-Routing-Protocol-Tutorial/doc/www.agencessaintferdinand.com
    • https://www.agencessaintferdinand.com/wp-content/uploads/formidable/5/recommended-linux-distro-for-laptops.pdf
    • https://www.agencessaintferdinand.com/wp-content/uploads/formidable/5/the-arrl-handbook-pdf.pdf
    • https://www.agencessaintferdinand.com/wp-content/uploads/formidable/5/rome-in-roman-letters.pdf
    • https://www.agencessaintferdinand.com/wp-content/uploads/formidable/5/dynamic-array-declaration-in-c-using-malloc.pdf
    • https://www.agencessaintferdinand.com/wp-content/uploads/formidable/5/no-direct-deposit-loans.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_020_off0001cab7.bin
43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1CAB7 76950 bytes

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