Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e52a6bb3942f41…

MALICIOUS

PDF

37.3 KB Authoring application: PDFedit
MD5: 2626840c613563ff8f369a68e8ecb13e SHA-1: 15a1023c5766b4f9d47983dfc392a20c03a8a5c5 SHA-256: 64e52a6bb3942f4182a38e9daf99cc9a5fc1d04c5295a75bfcac1ae910f56b50
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, indicating a phishing or traffic redirection scheme. The embedded URLs are likely part of this redirection chain.

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://stocktalknow.com/uploads/1/3/0/5/130550823/desazutelanafe-bikumizalotufap.pdf
    • http://shopkatela.com/uploads/1/3/0/5/130589449/gufibepovusobek-timewaxopi-vexeme-perejeb.pdf
    • http://www.geckoworks.designpreviewer.com/uploads/1/3/0/2/130291463/kelekomemosusi.pdf
    • http://bardinterns.com/uploads/1/3/0/3/130379389/7848294.pdf
    • http://weedeaterridinglawnmower.net/uploads/1/3/0/4/130476944/5545887.pdf
    • http://excelnsulation.partners/uploads/1/3/0/6/130639214/4510142.pdf
    • http://teamtorian.com/uploads/1/3/0/7/130775867/7d9405.pdf
    • http://cgusrls.com/uploads/1/3/0/6/130639294/773033.pdf
    • http://www.umwstudentlogin.com/uploads/1/3/0/8/130813369/dabazemajuzasadita.pdf
    • http://konges.store/uploads/1/3/0/7/130775280/bavasokakitolefem.pdf
    • http://i05g5.salon225.com/uploads/1/3/0/6/130621776/130621776.html#how+to+enhance+reading+in+ielts

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ccc.bin
d7f1f22bf7cb1c5f379b47c11b70326251476e239f6a4b8265db62f78f1353b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x3CCC 7672 bytes