Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd71f6dc6a87f915…

MALICIOUS

PDF

35.9 KB Created: 2020-03-27 06:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 50f10f360701f201036996942798d7ac SHA-1: d749a688904c4f47b7ed397b3c92497b1ef390c2 SHA-256: dd71f6dc6a87f915ed345c85329de0264895e71f200f07e3a5527f71185ae7ac
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, while appearing to be a chapter summary, is likely a lure to encourage clicks on the embedded URLs. The primary attack pattern involves directing users to a link farm of PDF documents hosted on various domains.

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://myamazonuk.com/uploads/1/3/0/4/130488578/130488578.html#keeping+the+republic+8th+edition+chapter+3+summary
    • http://buildthatbusiness.com/uploads/1/3/0/9/130968972/gadolususis.pdf
    • http://northeastmarineelectric.com/uploads/1/3/0/6/130620454/c5899c03d0e050.pdf
    • http://pinebrooksecurity.com/uploads/1/3/0/2/130272432/5314f40e84d34b.pdf
    • http://www.draagbarezuurstofconcentrator.net/uploads/1/3/0/6/130604700/lularifu_bipowawevobozu_besoniza.pdf
    • http://myladymichaeltarot.com/uploads/1/3/0/8/130813025/78004d1.pdf
    • http://screscentoutfitters.com/uploads/1/3/0/2/130271132/7865f2.pdf
    • http://wholehi.com/uploads/1/3/0/3/130379479/05e4e331a7e.pdf
    • http://www.trackingcme.com/uploads/1/3/0/4/130436242/bebomutimoki.pdf
    • http://burtonuniversity.org/uploads/1/3/0/5/130590438/zovovibatizotalivogi.pdf
    • http://www.comg2l.eu/uploads/1/3/0/7/130739975/436117b9.pdf
    • http://lineaamericana.com/uploads/1/3/0/3/130323341/3e2018797.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_off0000661c.bin
ba6eb9d6ff2f5e4728fc058f25afbe31722a1babaa5e11f08da166b43dd0e886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661C 7264 bytes

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