Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad97e4fdd496dd9a…

MALICIOUS

PDF

76.9 KB Authoring application: Inkscape
MD5: afe6481e489fd807df4468c3819f4bca SHA-1: 331b51dc09ff87deac051ddfc2c0f12bb47d1c2a SHA-256: ad97e4fdd496dd9a70bcd365242151307becaafe3581e078b54b35362777b43f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded links to other PDF files hosted on external domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute a large volume of potentially malicious content. The ML classifier and ClamAV detection further support the malicious nature of this file. No scripts were extracted from this sample.

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://southwesterntennisservices.com/uploads/1/3/0/2/130272071/330df43012.pdf
    • http://smartmobilityinc.com/uploads/1/3/0/2/130288709/popifajujigaku-pumisafasim-seduxige-tarexulejozef.pdf
    • http://joeybruzzese.com/uploads/1/3/0/5/130542710/tikirosinin.pdf
    • http://netherlands-korea.com/uploads/1/3/0/2/130273872/f820d5.pdf
    • http://budandblossom.studio/uploads/1/3/0/4/130436139/96836063165e.pdf
    • http://carrollcountydentistry.com/uploads/1/3/0/4/130476098/relenudifitisa.pdf
    • http://kareego.net/uploads/1/3/0/3/130323151/394c24088bda2b.pdf
    • http://tnsafefood.com/uploads/1/3/0/5/130544313/pefoji_pokaximivav_fademogido_tuwuweridi.pdf
    • http://aquaboysflow.com/uploads/1/3/0/6/130621918/2703451.pdf
    • http://bobflintceramics.com/uploads/1/3/0/7/130738723/4125294.pdf
    • http://bhagathalwai.com/uploads/1/3/0/6/130621516/luzijolofepej.pdf
    • http://drgreigltd.co.uk/uploads/1/3/0/6/130621279/tupop_voledid_jekiza_xawibirinobepot.pdf
    • http://mcvanv.com/uploads/1/3/0/3/130323163/senage-kuxeg-luzejusanijig.pdf
    • http://resurrectionmuseum.com/uploads/1/3/0/5/130546645/6593015.pdf
    • http://mrdombaza.com/uploads/1/3/0/5/130543941/7bcfc.pdf
    • http://webmail.griffinschiller.com/uploads/1/3/0/5/130551218/baguzox-lugilopomu.pdf
    • http://bestbridalshopsinnh.com/uploads/1/3/0/3/130379244/3dd39306.pdf
    • http://07i9xx.salon225.com/uploads/1/3/0/4/130489159/130489159.html#aeneid+summary+duke
    • http://tnsafefood.com/uploads/
    • http://agrossen.myhostpoint.ch/uploads/1/3/0/3/130324136/1f78d0508fd1b.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c7e.bin
c8bdd6248e53be1fb61270fb6405b48bfaae541ebb12838376267072bf4b85d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x3C7E 7924 bytes