Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2f81233f47f87e…

MALICIOUS

PDF

38.4 KB Created: 2020-04-04 12:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c6a530a52daab0f3feb3b4986cf2c405 SHA-1: 0a0025ee84d6736013453191c7c4d43166af79fe SHA-256: 2e2f81233f47f87ee0ab588610c05bf68359d30b0e0061c4392f0c801b58676e
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it is a dropper. The document body contains embedded URLs that likely lead to further malicious content or exploits. The presence of multiple suspicious URLs suggests a delivery mechanism for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-9404039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9404039-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://spiratio.com/uploads/1/3/0/7/130739495/130739495.html#low+fodmap+diet+for+ibs-c
    • http://mowerok.com/uploads/1/3/1/1/131164394/f24c30591e5645.pdf
    • http://artofitness.com/uploads/1/3/0/8/130814258/firawupazogak-zelobu-zetirewasej.pdf
    • http://fireflyinsuranceservices.com/uploads/1/3/0/6/130604864/dogorufogimotir-bezekekukax.pdf
    • http://marine-consult.net/uploads/1/3/1/3/131379740/fd9c5da.pdf
    • http://janaturals.net/uploads/1/3/0/2/130270904/4617767.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eff.bin
45720703e779557e6673f86cc70ca5cd005cb7a9aa8337bd63a51649be51cac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFF 7832 bytes

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