Malicious PDF — malware analysis report

Static analysis result for SHA-256 16bb7bafc3cbf236…

MALICIOUS

PDF

34.5 KB Authoring application: Inkscape
MD5: e64e30bb300dcccf9ffe0df791169742 SHA-1: 8d4d99cf691c9412417df0a6e212849b26dad06d SHA-256: 16bb7bafc3cbf2365e00a638e7deba42dbe8c8209aa53ba4827786c4a4e79d69
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of malicious activity.

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://www.wheresmyjewl.com/uploads/1/3/0/5/130588999/pitujufetubela-wetif.pdf
    • http://www.theawnmvt.com/uploads/1/3/0/6/130639951/sepapukakizax_boxijijuve.pdf
    • http://bouvardtavern.com/uploads/1/3/0/4/130436298/3653ace.pdf
    • http://filfoodtogo.com/uploads/1/3/0/6/130639669/bosugil.pdf
    • http://wickedricks.com/uploads/1/3/0/8/130873916/gisukakozetuf.pdf
    • http://mangumcourtyards.com/uploads/1/3/0/4/130483591/621583.pdf
    • http://accessdesigngroup.biz/uploads/1/3/0/6/130621412/fb6dc7c3f0.pdf
    • http://oakscorp.com/uploads/1/3/0/7/130739251/6baa3.pdf
    • http://guemeschannelembroidery.com/uploads/1/3/0/2/130270924/silinivule_nenumelegem_jifinib.pdf
    • http://www.kathrynamrhein.com/uploads/1/3/0/6/130604427/nabagujixafaf-wajusinofuwu.pdf
    • http://webmail.jennifermannauthor.com/uploads/1/3/0/4/130483863/130483863.html#alcalosis+y+acidosis+en+bovinos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003118.bin
33afa5b24b8d2632de7e368eed6903b0975e8f2531d57a6ab0dfdeeab786458c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 8408 bytes

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