Malicious PDF — malware analysis report

Static analysis result for SHA-256 c245fc79deaeacd7…

MALICIOUS

PDF

40.0 KB Created: 2020-06-23 19:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e0f3545d0149be17b63aa13c8dad3c2 SHA-1: 3c0eb1f92f7afac0d8fad55b1d45f85351168dea SHA-256: c245fc79deaeacd714e33afe93a381ccb64d9b4f290baa961b8e7c0c4ab1ebe7
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files. The document body mentions 'Pdf download mobile phones', suggesting a lure to trick users into downloading malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. No scripts were extracted from this sample.

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://azizfallnetworks.services/uploads/1/3/0/5/130551130/130551130.html#pdf+download+mobile+phones
    • http://sbaloanslosangeles.com/uploads/1/3/0/5/130545429/597079.pdf
    • http://shatterworksglass.com/uploads/1/3/1/4/131453177/zukumudepojoforab.pdf
    • http://webdisk.radarresearch.com/uploads/1/3/0/9/130969149/25b215d87.pdf
    • http://winzelerinc.com/uploads/1/3/0/3/130323674/1bca582.pdf
    • http://videoroots.com/uploads/1/3/1/4/131406717/nelek_voloravutinefiz_towakakexifanob_tawevuviza.pdf
    • http://suncountrycarpetcare.com/uploads/1/3/1/3/131382797/3152bbc7fe04bce.pdf
    • http://juliuswilliamsiii.com/uploads/1/3/1/6/131637194/guragubu.pdf
    • http://jmtannehill.com/uploads/1/3/0/4/130488750/6400b9e.pdf
    • http://mail.reybuilder.com/uploads/1/3/0/5/130589384/4067028.pdf
    • http://chateauneufdupapewineclub.net/uploads/1/3/0/2/130288579/zobuwabilonebi.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_off00005fa1.bin
44eadcaa5c774c3e6e067a30ae3b57e827ffa09aa2b0dc3550bf27406ac6fdda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 5124 bytes
font_01_sfnt_off000070ec.bin
c02414a741198ed2274cbba1dfd0903070997c36e4b1d001c5928da009b90da2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EC 10320 bytes

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