Malicious PDF — malware analysis report

Static analysis result for SHA-256 9207fe3849ad00b5…

MALICIOUS

PDF

50.6 KB Authoring application: QPDF
MD5: f0e55608a164f07800cfe9412d632e19 SHA-1: da48bfc73fde3a8ffa9a4223931f80381b844820 SHA-256: 9207fe3849ad00b5aa3b8176dbd10a3b31cf86f0c9172df5fbefd9d5cf807818
130 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to other PDF files, indicating a link farm designed for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of a visual download button lure further support a phishing or malicious download campaign. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gurzuf.taxi/uploads/1/3/0/7/130739309/6385286.pdf
    • http://www.vintagethriftinc.com/uploads/1/3/0/5/130588382/fdcddb07.pdf
    • http://mail.kilookas.com/uploads/1/3/0/2/130289274/347109.pdf
    • http://dbsarah.com/uploads/1/3/0/6/130621057/nekiteza.pdf
    • http://uservite.com/uploads/1/3/0/6/130621979/01427d57.pdf
    • http://daciajones.com/uploads/1/3/0/7/130738641/da293a72a.pdf
    • http://redbrickpro.com/uploads/1/3/0/6/130604838/3814997.pdf
    • http://moongy.org/uploads/1/3/0/5/130539155/jegejawaloxijep_pimepasiraxa.pdf
    • http://brainquery.com/uploads/1/3/0/3/130323277/3183458.pdf
    • http://iteropartnerlaboratory.com/uploads/1/3/0/5/130543667/4744592.pdf
    • http://stlopenwater.com/uploads/1/3/0/7/130739068/a09e5eacd04.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/7/130775918/130775918.html#upload+file+pdf+di+wordpress

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a30.bin
63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A30 2600 bytes
font_01_sfnt_off000052e8.bin
6e3c9bc158dd4015c3efdfd04f8e06ad7cbd79605ce2b83b3be5c5c8a5af0245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52E8 16656 bytes
font_02_sfnt_off00006d06.bin
9a8917302082720c9ed73f77dfe54cef15525cc2da0f117ed960e7fd641ae410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D06 8876 bytes

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