Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b53cea5aef867d…

MALICIOUS

PDF

33.0 KB Created: 2020-06-21 12:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b90990bb4ca77b99815c116f2aa3c6d SHA-1: 2dfb940c2ae0c62e909bbf6624f88a0d5b6bfd34 SHA-256: e5b53cea5aef867d8a295ec526b4c3e3aacb16cde74845c0a0eb134861528be0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was identified as malicious due to its structure, which contains a large number of external links pointing to various domains. The document body and embedded links suggest a lure to external content, possibly for SEO manipulation or to redirect users to malicious sites. The primary attack pattern involves a link farm strategy, aiming to drive traffic to numerous unrelated domains. No scripts were extracted, limiting the analysis of direct payload delivery.

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://aspotforawesome.com/uploads/1/3/0/7/130776684/130776684.html#scitools+understand+tutorial
    • http://benzandbmwrepair.com/uploads/1/3/0/5/130589223/4349251.pdf
    • http://womenshealthteams.com/uploads/1/3/0/5/130541272/3ff077923e.pdf
    • http://sosfinancialeducation.org/uploads/1/3/1/8/131857818/zesiwunevozefoz.pdf
    • http://ipsum-gaming.com/uploads/1/3/1/0/131071066/vuzunavones.pdf
    • http://mckaysearthmoving.com/uploads/1/3/0/5/130551523/1618193.pdf
    • http://arrowsout.com/uploads/1/3/1/4/131455232/sitofawexamaxulos.pdf
    • http://goldenafrovr.com/uploads/1/3/0/4/130483926/8476.pdf
    • http://elitelimolittlerock.com/uploads/1/3/0/4/130477605/resom-wilawot.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004759.bin
2d6f459c762bd2033689fb119b09823f0a3f5ef2a408eb4c9bdce7684b87df53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4759 4916 bytes
font_01_sfnt_off000057fe.bin
7362f469605cfb28b4993af9d2adcfab0975ee2a7552a12910d87b5a22904b07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57FE 9292 bytes

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