Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73949fbc2c19f6c…

MALICIOUS

PDF

33.2 KB Authoring application: OpenOffice.org
MD5: 90961a67388b5133135dc27fca31fa40 SHA-1: 8cef6ac534f900033e3d6e28ff0bbca95fb55097 SHA-256: f73949fbc2c19f6c809ce3734254459650f3b437095f6d5870ba2b1168e1f455
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this file. No scripts were extracted from this sample.

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://ngabwe.com/uploads/1/3/0/2/130271015/kojuguni.pdf
    • http://shcdesignsllc.com/uploads/1/3/0/3/130313390/titepoworipezup.pdf
    • http://newtampatraillife.com/uploads/1/3/0/2/130289577/6247390.pdf
    • http://cslsolution.net/uploads/1/3/0/6/130620700/537d87.pdf
    • http://northwestpolebuildings.com/uploads/1/3/0/2/130287229/4388d0cb2d16e.pdf
    • http://cosras.weascend.org/uploads/1/3/0/5/130551991/bafigudirajiz-jiradovulew-wesadex.pdf
    • http://siwibure.tv-ads.ru/uploads/2020/01/28/vodadorenovu.pdf
    • http://newleaf-dayspa.com/uploads/1/3/0/2/130289510/130289510.html#bollywood+mkv+movies++hd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001148.bin
f38b4f0bd8402126dd9e9346fc0931e6c14e82eacd240925cced1b6c1cd69c30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1148 8380 bytes

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