Malicious PDF — malware analysis report

Static analysis result for SHA-256 29cb087a24364567…

MALICIOUS

PDF

35.8 KB Authoring application: SWFTools
MD5: e6df79bcb624411fa8cf5974c0324883 SHA-1: 80a83bf7fa11caa4fbb701e48b3cb8c3014e3fa7 SHA-256: 29cb087a24364567531dfaf5265d342f721222aa7a079033fe03eae6472a38ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent, likely related to phishing or traffic redirection. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://middletnapic.org/uploads/1/3/0/4/130477864/5593493.pdf
    • http://sandlifeswag.com/uploads/1/3/0/6/130622084/zekigese.pdf
    • http://neverdonefiberfarms.com/uploads/1/3/0/4/130477661/nemugugino.pdf
    • http://newpublicnetwork.net/uploads/1/3/0/2/130270906/ruwexirimiwukujeno.pdf
    • http://mhsdoernbecher.com/uploads/1/3/0/6/130604531/luvipotane_fafisudanisimur_wovizes_lolinovamu.pdf
    • http://podollangpis.devsite-1.com/uploads/1/3/0/7/130738785/130738785.html#chitrakoot+mahima+song

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001066.bin
47cdbb058895e0ca8ab72abbdbbc0265126f579aaafc00a5dbc00eb377d6d217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1066 7908 bytes
font_01_sfnt_off000042b3.bin
9b28dd7b123906d733bfeb79f26d593fe68ca2ab7ff0c5306231dd235e626c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42B3 8768 bytes

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