Malicious PDF — malware analysis report

Static analysis result for SHA-256 33552bddbfb3df17…

MALICIOUS

PDF

34.9 KB Authoring application: SWFTools First seen: 2020-09-04
MD5: 2e285f6ea095731d71a5455568481d97 SHA-1: fd452ad2c85d12e16de4fc768f1036532fe5e0d1 SHA-256: 33552bddbfb3df177869637f92ac502831baa770ae13e6fa05072752bcc232d5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566 Phishing T1204 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links pointing to external PDF files, a technique commonly used for SEO poisoning or phishing lures. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded links likely lead to further stages of an attack, such as credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://diku.cityglush7.icu/uploads/2020/01/27/3169b61f5002.pdf In PDF document text
    • http://durop.svyazexpo-online.ru/uploads/2020/01/28/gesaxiwiz.pdfIn PDF document text
    • http://jungomusicproductions.com/uploads/1/3/0/4/130489025/614d4f.pdfIn PDF document text
    • http://dream-boxxx.ru/uploads/2020/01/29/tapebisefatazu_jaboxodori_kobonowob.pdfIn PDF document text
    • http://giw.autogost.com/uploads/2020/01/29/duseb.pdfIn PDF document text
    • http://kreativejeanius.org/uploads/1/3/0/4/130483407/e7cc1b074496.pdfIn PDF document text
    • http://milkywayshirt.com/uploads/1/3/0/4/130475936/130475936.html#attestation+de+stage+exemple+pdfIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000111a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A 9068 bytes
SHA-256: a8928eaa7890c9bae8c3d9cc0290b00d8d9f8a23fac6d37475f7f015b0ae4a2f

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