Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9013506db417163…

MALICIOUS

PDF

101.3 KB Created: 2022-06-30 01:01:56 Authoring application: Amended My Tax For Spouse groupcp (via FPDF 1.82) First seen: 2022-07-15
MD5: f25311d1a9f065e10dd31c201f970560 SHA-1: 9314c478d46696be7ecb59a35aacebcd4acb4dbb SHA-256: d9013506db4171633cce89df7a5a3d3cc890d120edd697d9779c21d302dc5190
62 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, several of which are invisible and repeated, designed to trick the user into downloading a payload. The primary malicious URL identified is http://completespcr.site/Amended-My-Tax-For-Spouse/pdf/copycentralga.com. The document's structure and the presence of these links strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0010

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://completespcr.site/Amended-My-Tax-For-Spouse/pdf/copycentralga.com
    • http://completespcr.site/Amended-My-Tax-For-Spouse/doc/copycentralga.com
    • https://copycentralga.com/wp-content/uploads/formidable/2/amored-core-verdict-day-review.pdf
    • https://copycentralga.com/wp-content/uploads/formidable/2/electrolux-wet-and-dry-vacuum-cleaner-manual.pdf
    • https://copycentralga.com/wp-content/uploads/formidable/2/lien-se-lankstaanskoene-die-boek.pdf
    • https://copycentralga.com/wp-content/uploads/formidable/2/wetland-obligate-vs-facultative.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_013_off00018a41.bin
43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18A41 76950 bytes

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