Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e71f81604645b0e…

MALICIOUS

PDF

36.4 KB Authoring application: Solid Converter PDF
MD5: 19ab39c02a996f9f977930c3b53a42b2 SHA-1: 56209ae934e8fd08f37f7c06dcf5d3e3cd4bb262 SHA-256: 5e71f81604645b0e9390d3e8a014993cdb2e9e119904e9dc2dad27891521913f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links likely lead to malicious content or further infection vectors. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution scheme.

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://bradeaton.net/uploads/1/3/0/6/130621003/8599029dd37c.pdf
    • https://mudanezuk.weebly.com/uploads/1/3/0/2/130270917/1046127.pdf
    • https://dolezipuke.weebly.com/uploads/1/3/0/5/130588376/xejavefab-ruritif-zipatunofegote.pdf
    • http://counsellingonline.biz/uploads/1/3/0/4/130436285/3b14a4c4b098fb4.pdf
    • http://vapeziv.hemisphere-gnss.ru/uploads/2020/01/29/9823243.pdf
    • http://tozuvizeno.prosamoe.ru/uploads/2020/01/28/856222.pdf
    • http://fijide.solicitacoes.online/uploads/2020/01/28/d5228d.pdf
    • http://dotes.cafe-oldbaku.ru/uploads/2020/01/28/13c2c02d.pdf
    • http://xujib.lider-fruits.ru/uploads/2020/01/28/mukenano.pdf
    • http://meshayla.com/uploads/1/3/0/6/130603860/130603860.html#festivals+and+celebrations+around+the+world+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000120e.bin
ceda0c339e58262b197d50e69678eb6ab2a68c1db1dbc504010b3a11f76f99ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120E 8276 bytes

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