Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dff8f9936ec7bef…

MALICIOUS

PDF

36.1 KB Authoring application: Adobe PDF Library 9.0
MD5: 6961168c4fd4c808efb563da4313b98c SHA-1: 9b3cb7d0736ad6899e102b663706653ea8ac7c78 SHA-256: 5dff8f9936ec7befc0ade9cad1592193c580ea13759e5439cb01ea91a82f383a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute malicious content or manipulate search engine results. The ClamAV detection and ML classifier further support the malicious nature of this file, likely related to phishing or malware distribution.

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://bushelandbasket.com/uploads/1/3/0/7/130776526/kazoluvigemuge_xaxaruvamivorit_jitufijunufana_fegabebutukog.pdf
    • http://havenlyfarmtx.com/uploads/1/3/0/6/130620731/boweriles.pdf
    • http://bangkokpropertymanagement.com/uploads/1/3/0/7/130739416/mupeket-nakul-megex-wibomopexa.pdf
    • http://aaroncharlesg.com/uploads/1/3/0/5/130539319/054f2f0.pdf
    • http://www.terrancedennis.com/uploads/1/3/0/5/130590431/kosakofo.pdf
    • http://www.ayurvedmedicinz.com/uploads/1/3/0/6/130621213/4838216.pdf
    • http://ww2.thumbprintgallerysd.com/uploads/1/3/0/6/130639170/karuzat_zarezelojaminem.pdf
    • http://pisymposium.com/uploads/1/3/0/4/130435725/4f06c2a74042c.pdf
    • http://pitek.net/uploads/1/3/0/4/130489097/6714966.pdf
    • http://ramsen.com/uploads/1/3/0/7/130775242/kolimigiroz-xiduwesukosufu-zigisimasewax-wanidefatezulif.pdf
    • http://samhansonconsulting.com/uploads/1/3/0/5/130540725/xowafudukobowad.pdf
    • http://dock84.pleasingfood.com/uploads/1/3/0/4/130435753/130435753.html#addition+and+subtraction+quiz+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000358f.bin
d3dd7b285e0b6c7514c0279a431af3f201910f3ca3e847d5f47e115bf6096a28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x358F 7944 bytes

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