Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7905be9bda52bc…

MALICIOUS

PDF

8.1 KB First seen: 2026-05-10
MD5: 267f8b6e39583437e2f34184e93a428e SHA-1: 14187bc12a3342fb1fdec87692116106c3e375e2 SHA-256: 2e7905be9bda52bc0e73e8b50689040e2b52d235659927d8ec8ce9a24f2812c7
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream is obfuscated using String.fromCharCode, suggesting an attempt to hide malicious functionality. While no specific malicious URLs or scripts were directly extracted, the presence of obfuscated JavaScript points to an attempt to download and execute a second-stage payload. The benign URLs present are standard for PDF metadata and do not indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9224

Heuristics 5

  • JavaScript action low 2 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
    Matched line in script
    isgngva="0T1+1Z1f2Z1d3K1b3]1`2h1^3b1[2V2g1H1S1V2d1T3Z3_1O1P272f1M3^1K3S1I3f3h1F2]1D3L1B3d1:1=1>2Y2e1;2T2W1215163/33133+3-1.1/3G3T1,3=3E0^0i3`0g3M0c0d242R0a3a0_2L2U0Y0Z2[2_0W3P0U3N3Y0:0K0P2O0N2^0L3V3X0I2J0G2b0A0D2S0B3I3Q0=0>3W3c0;2X3R06072`3O042a2c";erfqcm="FNeLCFj9=LehXLcPW9,05.Kh>a^b,g>@?:hIO_a_W9,05.UeECfVQI_I?0RI`7VhZY//O??1K-/L?5ceMZKL[2T>@?;I454Rg2BV<RG;c:[BOI/N85.[LeHf@J9TPaHMcR`ZT>@?:aN_0QRg2BV<4O/KI45,LZRVTOZKTY7Y5R:ZZM`-TQ_HRj:ZZM]ac?454SF2DO4RG:AR4+:4+;>RVTOZKT.gg7:eJY@J**+>RVTOZKT3,9= …
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000328.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328 2958 bytes
SHA-256: 4ffea3c7fc92792d64cf6ba955147224d78936835ba9388c6e4f1d8a76bff7b3
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
objstm_0024_00.bin pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes
SHA-256: ef2fd644b798671669ca0043e6b0101509943e1786fd2803f938278908310935

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