Malicious PDF — malware analysis report

Static analysis result for SHA-256 3421339a46da42e4…

MALICIOUS

PDF

43.8 KB Authoring application: OpenOffice Draw
MD5: 34b87f4a48edd9dd0f4543cb801b7f66 SHA-1: d82f771044e2c4305c67cd938ef6246ed6442374 SHA-256: 3421339a46da42e430eb3586f2554b84c2684565df39ced2106f77ac9af92a82
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links disguised as a download for 'Aspera connect free for mac', which is a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://healthydessertscatering.com/uploads/1/3/0/6/130620296/datazutudifewulove.pdf
    • http://nqxr.com.au/uploads/1/3/0/6/130621481/dexibugel.pdf
    • http://alpurpletaxi.com/uploads/1/3/0/4/130475939/wuvox.pdf
    • http://hamcox-ray.com/uploads/1/3/0/5/130551253/lejizojilegubu_fobaw.pdf
    • https://botukiberep.weebly.com/uploads/1/3/0/2/130272616/wuwelo_kikajigos_xofudefikulu_ruzulekujixo.pdf
    • http://smithsolarlab.com/uploads/1/3/0/2/130287488/sajor.pdf
    • http://mymissblue.com/uploads/1/3/0/4/130493816/130493816.html#aspera+connect+free++for+mac

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001179.bin
2132bcccbd259d7f9c8d1434f7dabab216cefe5b0b8a566d594ca64b7484d268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179 9144 bytes

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