Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ff311b56c1746f…

MALICIOUS

PDF

37.8 KB Authoring application: Poppler-utils
MD5: 3e82941ad7e03aa4f0a39177cb8d3b47 SHA-1: 652fe914fcd177592bccad1d4700a6474db58da5 SHA-256: 52ff311b56c1746f23b466d6fff0ed22e7cabc0a94edc26dd7d9a2cd7ac996e4
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a PDF_SEO_LINK_FARM heuristic, indicating the presence of multiple external links within the document body. These links, such as http://xal.svea.pro/uploads/2020/01/28/fixisa_tesajiran.pdf, are likely used to redirect users to malicious websites for phishing or malware distribution.

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://xal.svea.pro/uploads/2020/01/28/fixisa_tesajiran.pdf
    • http://awbsro.com/uploads/1/3/0/4/130494478/8a0d2d9ed58.pdf
    • http://zojes.tht-premiere.online/uploads/2020/01/28/7da91eff.pdf
    • http://centralrefrigerationinc.us/uploads/1/3/0/2/130289629/3cce0ca750ffa.pdf
    • http://xoruguga.mammoth24.com/uploads/2020/01/27/5020323.pdf
    • http://xekani.pp-offer.club/uploads/2020/01/27/ziwadoxofusero.pdf
    • http://magicalmomentsbymichael.com/uploads/1/3/0/6/130620857/130620857.html#global_cfg+not+found

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010ca.bin
8e3eac715c45b49ecb8fe37607015828c7c977ca9ace1bd0e8f7c6b65a74803f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA 8924 bytes

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