Malicious PDF — malware analysis report

Static analysis result for SHA-256 b943774f76d17c86…

MALICIOUS

PDF

50.6 KB Created: 2025-11-04 00:54:16 -08:00 Authoring application: iTextSharp’ 5.5.13.3 ©2000-2022 iText Group NV (AGPL-version)
MD5: 2b7543640d74a5a8bcc7399d8f8454f8 SHA-1: 176f478b9487c763af78d9b8b161b50f67210395 SHA-256: b943774f76d17c86097b22aea84201788037eaeeef222c8a647fe98e795cf8af
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF is identified as an image-only lure, typical for phishing. It contains multiple invisible links pointing to an IP address, which is a strong indicator of malicious intent. The primary URL, http://147.124.222.89/host/RESOCONTO%20INSOLUTI%20al%2031102025%20-%20ATTENZIONE%20IBAN.7z, likely serves as a download for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9256

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 50 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://147.124.222.89/host/RESOCONTO%20INSOLUTI%20al%2031102025%20-%20ATTENZIONE%20IBAN.7z
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
icc_00_off00000059.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x59 3144 bytes

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