Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eabc8e7135eeb5c…

MALICIOUS

PDF

47.0 KB Authoring application: Nitro PDF
MD5: cf21f7ae68153159e0f63515ad6dc772 SHA-1: 6d1baeaaf77b03c695a1d496a24b4373c9aa0ca7 SHA-256: 5eabc8e7135eeb5c2fee5d41a865999eff3aa64e3a11872cd35b2367a3c9c5b6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique commonly used in SEO spam and phishing campaigns to drive traffic to malicious sites. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier further support its malicious nature. The embedded URLs are likely used to host further stages of an attack or to redirect users to phishing pages.

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://newhomestelevision.com/uploads/1/3/0/5/130544754/winega.pdf
    • http://neonserwis.pl/uploads/1/3/0/4/130483833/losazi.pdf
    • http://thedroneinvasion.com/uploads/1/3/0/6/130621805/xevukedibuvaral.pdf
    • http://premierbv.com/uploads/1/3/0/6/130639054/votejixalolu.pdf
    • http://noscopegaming.net/uploads/1/3/0/6/130639935/sozupi.pdf
    • http://teratype.net/uploads/1/3/0/6/130639491/7933066.pdf
    • http://nicholebertucci.com/uploads/1/3/0/4/130489446/romijetosimimamagobi.pdf
    • http://thietkecanhquan.org/uploads/1/3/0/4/130435509/5734202.pdf
    • http://jaimebryant.com/uploads/1/3/0/5/130545885/meveg.pdf
    • http://anti-agingbyrjxjelly.com/uploads/1/3/0/7/130775649/1674530.pdf
    • http://tikibravo.com/uploads/1/3/0/4/130488228/manulavewizaze.pdf
    • http://readyplayerone.store/uploads/1/3/0/6/130605198/fekixe.pdf
    • http://sauerlandhypotheek.nl/uploads/1/3/0/2/130287727/130287727.html#apache+poi+version+for+java+1.6

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012f8.bin
dca982ddd49f6ff3866979534476ea3743c0e508b0c0ed2f66154ef4c1deb57f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8 8860 bytes

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