Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1688d75966af15…

MALICIOUS

PDF

39.7 KB Authoring application: Nitro PDF
MD5: 3ac72e53dfccaa74159812e54707c3a4 SHA-1: 7198b3883387b3f41d9487c5ec76fdc5908307ad SHA-256: 9d1688d75966af157db1751b52eea795067de8ccf811a8d326279173838ce7d6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further suggests a phishing or traffic redirection scheme. The embedded URLs point to various domains, all seemingly part of a link farm designed to distribute traffic or host malicious content.

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://iwonderwouldi.com/uploads/1/3/0/3/130324451/xefasofep-lajenesaku-powunafo-rugotewewad.pdf
    • http://bayarea-interactivehypnotherapy.org/uploads/1/3/0/5/130545581/6494938.pdf
    • http://sltahoehabitat.com/uploads/1/3/0/4/130476703/bejuwolakevisijofomo.pdf
    • http://mindhealthconnection.org/uploads/1/3/0/2/130272516/sowerog-ribuxenim-zitawig-rixubolurenan.pdf
    • http://venagallery.com/uploads/1/3/0/6/130639972/kiwil-niziwu.pdf
    • http://sewoz.zotye-t600.ru/uploads/2020/01/28/ba7dc75.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/7/130738614/130738614.html#online+roll+up+banner+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001179.bin
911b3f1727decaff01372ff9ea61763f3c9c59037bc635f0c25510535af4f689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179 8164 bytes

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