Malicious PDF — malware analysis report

Static analysis result for SHA-256 a056304b6bb8be11…

MALICIOUS

PDF

41.3 KB Authoring application: OpenOffice.org
MD5: 5fa987a8a15c87ed01377d7b288f90f2 SHA-1: 8dbb02935d9ea17e8aa403f9ca5f1e243531cd13 SHA-256: a056304b6bb8be114ed3d995f024ee0e74ff15d6decfe1aef6f2bb8db67db917
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting an attempt to redirect users to malicious content or phishing sites. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious nature of the file, indicating it's used for phishing or traffic redirection. The embedded URLs are the primary indicators of compromise.

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://koxosawe.mnekak.pro/uploads/2020/01/28/lelabitexabafe-wijelosuzavano.pdf
    • http://mycubbylife.com/uploads/1/3/0/4/130435592/namepigimebix.pdf
    • http://carnivalincovington.org/uploads/1/3/0/2/130289443/gejomukejilokorepe.pdf
    • http://mikeintucson.com/uploads/1/3/0/5/130542907/130542907.html#celliant+sheets+macys

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001196.bin
ed6989dcac85eaa54b19f4620ed2977f0fda6167e3e89bd0e32fa1f3bb4e903e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1196 9028 bytes
font_01_sfnt_off0000593b.bin
91113025ca5ea62ce1fbf7d0ce3c32f75c7631bcca7bdb0ff4560d186d3c344d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593B 16584 bytes

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