Malicious PDF — malware analysis report

Static analysis result for SHA-256 8523d6ca19b18374…

MALICIOUS

PDF

34.7 KB Authoring application: pstoedit
MD5: 7eb0c858356283c0c8cc2dcdae3d5826 SHA-1: 9067484443f7728fe221a274694a789e0c3c43b1 SHA-256: 8523d6ca19b183744105b3666fb68752962b1fba4b2051b339211a3e64ea6723
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged the file as malicious, specifically identifying it as a phishing-related threat. The embedded URLs are likely part of a link farm designed to drive traffic or distribute further malicious content.

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://ourgreenlittlevillage.com/uploads/1/3/0/4/130476372/dozisazuludajuzup.pdf
    • http://soberdoodles.com/uploads/1/3/0/2/130288348/didabo.pdf
    • http://extenzo174.ru/uploads/2020/01/27/877bed540c.pdf
    • http://altaisk22.ru/uploads/2020/01/29/pitaxidiw_wasonovozaru_sakenoporep.pdf
    • http://pedahzur.com/uploads/1/3/0/4/130483498/dazupuluvejale.pdf
    • http://djsacademy.com/uploads/1/3/0/6/130639362/130639362.html#carencia+de+vitamina+e+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001057.bin
e3a8e8cd9c5caf74e25f7370085bb9dda59b3078940f56f4fd0213c6f16e9cf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1057 8476 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.