Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7016889fb9f630…

MALICIOUS

PDF

37.8 KB Authoring application: Karbon
MD5: bc750dd2bbbd7aaf9b4c77cc39a5cd96 SHA-1: 07f3b8ec91e4e8b8bc884aea18bb37218bb21b3e SHA-256: db7016889fb9f630b1ec70447297a5f80b60d3d959815df7b1c6f8a0e0383898
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The embedded links are the primary IOCs, pointing to various domains hosting other PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://7sevensteps.com/uploads/1/3/0/6/130621932/2078131.pdf
    • http://nextgenerationatl.org/uploads/1/3/0/5/130550835/6117161.pdf
    • https://guxelopinafufu.weebly.com/uploads/1/3/0/5/130550980/jerij_jifonek_lisamawor.pdf
    • http://theallergyfreezone.com/uploads/1/3/0/2/130287915/5876908.pdf
    • http://sloansinventories.com/uploads/1/3/0/5/130589275/tudidipoluzubove.pdf
    • http://performanceinc.club/uploads/1/3/0/5/130589078/nugiwawepo.pdf
    • http://matio3d.com/uploads/1/3/0/7/130739763/7d767df.pdf
    • http://skiesthelimitphotography.com/uploads/1/3/0/2/130272319/5540057.pdf
    • http://6monthsatatime.org/uploads/1/3/0/5/130588687/milosate-gojezuv-jegixijanosis-delifarol.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/3/130379488/kelewudesebur.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/3/130323209/130323209.html#spinal+stenosis+nhs+guidelines

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001276.bin
ec806eeec9c844c4814bfdc4da91638b363cb16cf70ac4e99a9c30cf047c3aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1276 8388 bytes

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