Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e6d5fd819cd56f…

MALICIOUS

PDF

34.6 KB Authoring application: pdf-parser
MD5: e96991d8bdcb32383629402a84f4583a SHA-1: f28b7e454ca067b7019f843000cc138181ad2082 SHA-256: 85e6d5fd819cd56f13bacd36420d4778c03e3449772d0a25e72f1e11a4ced80c
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggest a malicious intent, likely related to phishing or SEO abuse. No scripts were extracted from this sample, limiting the analysis of direct execution capabilities.

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://webdisk.jaredmichaelsobotka.com/uploads/1/3/0/3/130323158/a5b211dd8.pdf
    • http://www.copaveltd.co.uk/uploads/1/3/0/7/130739034/5951722.pdf
    • http://leftproject.org/uploads/1/3/0/2/130288757/b62769d.pdf
    • http://amandacake.com/uploads/1/3/0/6/130621127/dapuri.pdf
    • http://psykron.net/uploads/1/3/0/5/130590208/207be6b0b.pdf
    • http://hyperdrivestudio.net/uploads/1/3/0/7/130776611/daguliteposa.pdf
    • http://kemitinc.com/uploads/1/3/0/6/130604300/1dacb53e.pdf
    • http://cartonioscornerjewls.com/uploads/1/3/0/7/130775328/mesunisobipapiximasu.pdf
    • http://michealsdeckrepair.com/uploads/1/3/0/5/130551677/pibupatusepize.pdf
    • http://www.sauerlandhypotheek.nl/uploads/1/3/0/4/130435906/67905c.pdf
    • http://maisonskincare.com/uploads/1/3/0/7/130775001/lenuxo_tenig_jelutago_fawun.pdf
    • http://jgrimmer.com/uploads/1/3/0/8/130814030/vamelaje.pdf
    • http://u5wotw.bdgct.com/uploads/1/3/0/8/130813799/130813799.html#orbital+cellulitis+treatment+medscape
    • http://hyperdrivestudio.net/uploads/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd3.bin
4363ddbb06eabb6badf3af8926004c25cd89d68038b1c19aa58830194742189e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD3 7736 bytes

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