Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce88f7628a39711…

MALICIOUS

PDF

30.7 KB Authoring application: Soda PDF
MD5: 00b24d0af9801204c67c051020649378 SHA-1: ff2110da2e31aeb69913cef3b29a554d8b0e7176 SHA-256: 2ce88f7628a39711bf746641c249a3640718befc1374c55d469995c7bb3da9a8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF documents. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting a redirection mechanism to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://sesivipugojube.weebly.com/uploads/1/3/0/5/130539758/1137774.pdf
    • http://sixivo.avtovikuppro.ru/uploads/2020/01/27/0c8f17c.pdf
    • http://misfotografie.de/uploads/1/3/0/6/130604050/rukuselixezuk.pdf
    • http://ateachersplace.com/uploads/1/3/0/6/130605397/2925683.pdf
    • http://my36dates.com/uploads/1/3/0/4/130435511/911286.pdf
    • http://funetosiz.kvartiradomkzn.ru/uploads/2020/01/28/wokegopeka.pdf
    • http://anderson-missions.com/uploads/1/3/0/5/130538866/2255711.pdf
    • http://vabenodo.vipiski-besplatno34.icu/uploads/2020/01/29/f65a3ef65a40c.pdf
    • http://mercedesschools.com/uploads/1/3/0/3/130324270/130324270.html#apache+poi+generate+excel+report+example

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001184.bin
b792f25da5afcba7738b3864b8242d1715b0610668f8d33e533b82328df72f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1184 8108 bytes

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