Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7389be119277bb…

MALICIOUS

PDF

44.6 KB Authoring application: SWFTools
MD5: fdc159bed4ffd440d7088e27b8d2394b SHA-1: 2ac9a5d621e0624eeb995d91854e494b8c0c9435 SHA-256: 8e7389be119277bb332a6a95bb6462c1a6b755706e7e1611102db647e5cf6498
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing or traffic redirection. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to drive traffic to these external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://alexanderbridgeforth.com/uploads/1/3/0/6/130639622/11da161acc0.pdf
    • http://stadtentdecker-in.de/uploads/1/3/0/4/130477945/tejodak.pdf
    • https://jiwigoxujupoj.weebly.com/uploads/1/3/0/5/130544746/nikukito.pdf
    • http://nicolaheatharts.com/uploads/1/3/0/4/130491757/5839970d55.pdf
    • http://mammothlife.com/uploads/1/3/0/5/130589102/lupidu_totelovux_zefodegaronawe.pdf
    • http://charlie-myers.com/uploads/1/3/0/3/130313090/jekona.pdf
    • http://nicolitulk.com.au/uploads/1/3/0/2/130272232/130272232.html#birla+corporation+ltd+balance+sheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b2.bin
1941b042fdd1bd2eba2411f9948f15c4556498aca6477fb7691484ec11ac122e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2 8360 bytes

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