Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce6ba767f19f7c0…

MALICIOUS

PDF

39.5 KB Created: 2020-05-23 11:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5d569a22ef371a2b9ad48969dc47ed4 SHA-1: d257c88321b3e328d1cde0283e1ca3dadd8dc944 SHA-256: cce6ba767f19f7c05d63a54a21bbeb576b6e03e610cae53151cf71102df832a9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. This pattern is characteristic of SEO poisoning or link farm abuse, where the goal is to drive traffic to malicious or low-quality content. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://74-123-75-61.mgwnet.com/uploads/1/3/0/2/130272898/130272898.html#breeding+guide+war+dragons+harbinger
    • http://rdmcreations.com/uploads/1/3/0/4/130476243/2756802.pdf
    • http://mail.ofirservice.co.il/uploads/1/3/0/7/130739629/12c1b24b1002d.pdf
    • http://topnamsausage.com/uploads/1/3/0/5/130551401/gilifat_julisagato.pdf
    • http://empoweredyou.solutions/uploads/1/3/0/7/130739237/eec36dc4.pdf
    • http://dgriffinpropertysolutions.com/uploads/1/3/0/7/130776026/474687.pdf
    • http://hawaiianislandevents.com/uploads/1/3/0/8/130874254/negekagetogexep.pdf
    • http://wise-worth.com/uploads/1/3/0/6/130605174/da40bfa32.pdf
    • http://thepraexumacademy.com/uploads/1/3/0/6/130620565/3879417.pdf
    • http://centrecountydownsyndrome.org/uploads/1/3/0/7/130775062/e7f00ad3265d.pdf
    • http://lilladybugsdesigns.com/uploads/1/3/0/2/130291696/lulijitudib.pdf
    • http://premierhomeimprovements.ie/uploads/1/3/1/4/131453960/mawudaxamabazozejuf.pdf
    • http://chinatowngardens.com/uploads/1/3/0/7/130739619/620839.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f6d.bin
115fec2a3b822fdc3862f68c72ee329c9793dc5354bde038910efebc249e5aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 10424 bytes

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