Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d6b1bf1a632fd2…

MALICIOUS

PDF

256.1 KB Created: 2016-01-18 03:21:18 +01:00 Authoring application: RAD PDF (via RAD PDF 2.34.6.0 - http://www.radpdf.com) First seen: 2021-05-29
MD5: d861cd1b5cb5ff3e83b23cf9c82c1e39 SHA-1: 3db9dac77308a1ea9326ebca7c82ebc233272bfd SHA-256: 96d6b1bf1a632fd21f9296aad998f9f2d4b7bddc38a9c3b49f87cb6ffac3a307
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-based lure, typical of phishing attacks, designed to trick users into clicking a link. The document contains a shortened URL (https://tr.im/D0S9Z) which likely leads to a malicious destination. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest an attempt to redirect users to a malicious site, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5022

Heuristics 4

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 256 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://tr.im/D0S9Z PDF link annotation
    • http://www.dynaforms.comIn PDF document text
    • http://www.radpdf.comIn PDF document text
    • http://ow.ly/mitq3001Z2HIn PDF document text
    • http://www.iec.chIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.microsoft.com/typography/ctfontshttp://fontfabrik.comYouIn PDF document text
    • http://www.microsoft.com/typography/fonts/default.aspxIn PDF document text
    • http://crl.microsoft.com/pki/crl/products/MicrosoftTimeStampPCA.crl0XIn PDF document text
    • http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0In PDF document text
    • http://crl.microsoft.com/pki/crl/products/MicCodSigPCA_08-31-2010.crl0ZIn PDF document text
    • http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt0In PDF document text
    • http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0TIn PDF document text
    • http://www.microsoft.com/pki/certs/MicrosoftRootCert.crt0In PDF document text
    • http://www.microsoft.com/typographyIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000050f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F 173392 bytes
SHA-256: 9bfd2019f26500f53edaaa798b97f96ba7c57bab646f1276347225b56430dde8
font_01_sfnt_off00013a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A29 73728 bytes
SHA-256: d43e7b69e1e25fe070d522da94c4396003aae12eb7a75aecb2cc0f5e5feef6a6

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