Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02237d35834c115…

MALICIOUS

PDF

92.0 KB Created: 2017-08-23 19:31:36 +03:00 First seen: 2017-08-27
MD5: 900f03ab8c225b413aaf4e2eb95ad501 SHA-1: b9cae90f8bab7117da5d89ae9556b41979377d24 SHA-256: e02237d35834c1150cc744def5e528906164269779fd206020cd221bc6e51411
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

Heuristics 5

  • Suspicious extracted artifact medium 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.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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://ns.adobe.com/pdf/1.3/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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_013_off00003382.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3382 7200 bytes
SHA-256: 341510ee413822599ac689c68415980748dcce9dd395b9c49eb55b2863e2ba23
Detection
ClamAV: No threats found
Obfuscation or payload: likely
24 of 27 identifiers look randomly generated (e.g. 'YYYYYYYYYYYYYYYYYYYYYYY6') — consistent with name-mangling obfuscation.
stream_015_off00006523.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6523 69590 bytes
SHA-256: 7e4ae2c7aa0fb33e0f2671c94cedf01408c7dca8bc59b59c514ab28b7056d38c
Detection
ClamAV: No threats found
Obfuscation or payload: likely
actual_type=ZIP; declared_or_context_type=PDF; filename=stream_015_off00006523.bin; kind=decompressed-pdf-stream
objstm_0055_00.bin pdf-objstm-decoded PDF /ObjStm 55 0 obj (inflated) 7847 bytes
SHA-256: 88559965220870f18cd63a166847883898c9821ea65b144c66b72398e016a680
font_00_cff_off00002098.bin pdf-font-stream PDF embedded font (cff) at offset 0x2098 3789 bytes
SHA-256: 7eb18f971edec37c0445aa785eccef0c6297060e9ff06fd4c3196db967935d38

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