Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcbda2334323bb56…

MALICIOUS

PDF

41.8 KB Authoring application: GIMP
MD5: cd815a4518ab296911619bd616c409ad SHA-1: 7311a8483d2d211a1ceb96224ce0731bc847359f SHA-256: bcbda2334323bb56eca37e1060ae54f0a0eabe6eac2499c7063930b3cbd99109
168 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO or traffic redirection. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document likely prompts the user to install a fake browser update or extension. The 'SE_INVOICE_LURE' heuristic further suggests a social engineering tactic involving fake payment or invoice content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' confirms its malicious nature, likely related to phishing and traffic redirection.

Heuristics 5

  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://noahcaseycounselling.com/uploads/1/3/0/6/130620847/914fbd4.pdf
    • http://alleycatguitarshop.com/uploads/1/3/0/6/130639170/suwiwu.pdf
    • http://afuture-ahope.com/uploads/1/3/0/4/130476747/2815399.pdf
    • http://bavarian-opera-academy.com/uploads/1/3/0/5/130588370/9dc0ae09a.pdf
    • http://gokaizen.net/uploads/1/3/0/7/130740012/35117dc7e.pdf
    • http://mstsrv11.mst.systech.ch/uploads/1/3/0/5/130543310/vexam.pdf
    • http://alniyatbellydance.com/uploads/1/3/0/3/130313235/xazowixe.pdf
    • http://bigcreekgreenway.org/uploads/1/3/0/5/130550652/d0b697c50.pdf
    • http://compoundskin.com/uploads/1/3/0/5/130542822/tesunu_bukonisinuju_soponutex.pdf
    • http://outingsmanager.com/uploads/1/3/0/5/130590395/1713180.pdf
    • http://getsocialfied.com/uploads/1/3/0/7/130776719/a9c4276574c82bb.pdf
    • http://ats.franticband.com/uploads/1/3/0/2/130288761/0dbbeda5501759b.pdf
    • http://beatnikdj.com/uploads/1/3/0/9/130969917/130969917.html#pan+card+correction+form+new+excel
    • http://mstsrv11.mst.systec

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c1d.bin
811a066d32ad9fe6636b667b3a0a8b979524a7f7da6ff903c9734b6bec530062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1D 7860 bytes

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