Malicious PDF — malware analysis report

Static analysis result for SHA-256 088ffec0a6212639…

MALICIOUS

PDF

34.2 KB Authoring application: Solid Converter PDF
MD5: 6933e70ea8e9a277db8b5dbe085b9592 SHA-1: af7712501fd43dea376381318b0c7e1b4e68a67a SHA-256: 088ffec0a6212639bc6bbd3a2915d0d4dd2663933e1dedb74ec2d0d22c4ffa86
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files, a technique often used for SEO poisoning or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs likely lead to further malicious content or phishing pages.

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://dulcebesitos.com/uploads/1/3/0/6/130604935/maxazoremipisax.pdf
    • https://fotefijige.weebly.com/uploads/1/3/0/4/130435654/kuloju.pdf
    • https://fukefinelo.weebly.com/uploads/1/3/0/5/130551188/timipesixakufidaw.pdf
    • https://nekebopebufera.weebly.com/uploads/1/3/0/6/130604689/5568256.pdf
    • http://legenthology.com/uploads/1/3/0/4/130435658/d3ca1162b.pdf
    • http://courtjeremiah.com/uploads/1/3/0/6/130604477/padudurimefepax-galezufukunabax-gedimuwisoxowor.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/6/130622038/130622038.html#funcion+sumar.+si.+conjunto

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001128.bin
585fcb344d383ac78ad16a9107f1a12c3ff2c3872ae02201fb194161b62cc4b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1128 8668 bytes

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