Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea728df8a0cc259…

MALICIOUS

PDF

30.5 KB Authoring application: PDF Studio
MD5: 7d0331fdf461419ab4fd5c308be9d585 SHA-1: 38b20f5a1d3c98501e6f20f961cc8cc6229569b9 SHA-256: bea728df8a0cc259385df0f56f93ebd247373f0daa5f36a0affbd60876bbeaca
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, a common tactic for SEO poisoning and phishing. The document body mentions 'Ovarian cancer ppt template' and includes links to various PDF files, suggesting a lure to download malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and malicious download intent.

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 https://fezeguvujobu.weebly.com/uploads/1/3/0/5/130552106/4980356.pdf
    • http://xide.land-booking.com/uploads/2020/01/27/73292.pdf
    • http://csbcorner.com/uploads/1/3/0/5/130588687/xofabawotovinifiniw.pdf
    • http://esolstudio.com/uploads/1/3/0/4/130489297/wunegugo.pdf
    • http://vixadin.pay-pass.info/uploads/2020/01/29/3551666.pdf
    • http://carpetcleancary.com/uploads/1/3/0/6/130621345/130621345.html#ovarian+cancer+ppt+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001015.bin
8ebbab35b1c9ffe0054a7ee2428cb2c15b10414a3a7c1292a2e64cf90d152575		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015 8000 bytes

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