Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e058dd3cd3958d5…

MALICIOUS

PDF

34.9 KB Authoring application: ImageMagick
MD5: 4a939c9e53aa7e0320824a0fdf6e4598 SHA-1: 7650cb7e9649c98997f451200fda497c3b5e01ca SHA-256: 5e058dd3cd3958d5ff6c9ee48cf89645f35eb4bfd59826472b3a614b6388c8b2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://desatascoshospitalet.net/uploads/1/3/0/2/130291416/likinagu.pdf
    • http://notablecreationsco.com/uploads/1/3/0/6/130604169/2883585.pdf
    • http://baynotnhac.com/uploads/1/3/0/6/130604322/1bb56803.pdf
    • http://pinemountainlakelodge.com/uploads/1/3/0/5/130588740/1200088.pdf
    • http://engbets.com/uploads/1/3/0/7/130776321/ea1a5c5f348251.pdf
    • http://linda-bellydancer.com/uploads/1/3/0/4/130488270/ropol.pdf
    • http://snsmedia.org/uploads/1/3/0/7/130776433/6485773.pdf
    • http://cerritosnotarypublic.com/uploads/1/3/0/3/130379121/mizotatumej.pdf
    • http://persidata.com/uploads/1/3/0/5/130550971/8672564.pdf
    • http://sitandthink.world/uploads/1/3/0/6/130621143/8bb6e2a2.pdf
    • http://domesticgoddessish.com/uploads/1/3/0/5/130588987/jujezar-kujige.pdf
    • http://74-123-73-26.mgwnet.com/uploads/1/3/0/2/130288498/130288498.html#3m+acrylic+foam+tape+px5015

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325d.bin
42e50789769346be2bf7aa0a9f405d13243155a689302687faf66f3b72c96613		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325D 7768 bytes

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