Malicious PDF — malware analysis report

Static analysis result for SHA-256 236bc3af15be01f5…

MALICIOUS

PDF

38.0 KB Created: 2020-04-04 06:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3bd792f15d5c73bf80c0ea63f080d835 SHA-1: d1f3db0d4af6828db951b7b26d3a0059ec20d05c SHA-256: 236bc3af15be01f525fd6f792406fe9b2791474cfd7c7b8457f73a1615fdacc9
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, a common tactic for SEO spam and potentially malicious redirection. The document body text mentions 'Facebook memories app', suggesting a social engineering lure to encourage users to click on the embedded links. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with the first identified URL being http://racheldroessler.com/uploads/1/3/0/5/130547373/6021294.pdf, which is likely part of this link farm.

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://treasures4yourheart.com/uploads/1/3/0/4/130478481/130478481.html#facebook+memories+app
    • http://racheldroessler.com/uploads/1/3/0/5/130547373/6021294.pdf
    • http://andrew-ash.com/uploads/1/3/0/7/130738786/6bb43f7ff6d645f.pdf
    • http://911bailbondsla.com/uploads/1/3/0/6/130620756/7730272.pdf
    • http://poeticallypunctuated.com/uploads/1/3/0/2/130273843/mebesom_nubajigopexep_ranawebomujotu.pdf
    • http://thepaperaid.com/uploads/1/3/0/3/130323896/5f3b5.pdf
    • http://my-living-benefits.com/uploads/1/3/1/4/131406252/fogepudajigoberunu.pdf
    • http://markslaughterblog.com/uploads/1/3/1/4/131453087/9161496.pdf
    • http://napoleoncenter.com/uploads/1/3/0/6/130605193/muxigesera.pdf
    • http://chineseculturemi.org/uploads/1/3/0/2/130273626/binujaw-norobebolof-lonitozaj-pokube.pdf
    • http://susanweston.com/uploads/1/3/0/5/130590550/jukenigidofiduwedoz.pdf
    • http://dsreco.com/uploads/1/3/0/7/130740264/2c93255f.pdf
    • http://laundrycontrol.net/uploads/1/3/0/5/130551764/82d8061.pdf
    • http://drjamesworling.org/uploads/1/3/0/6/130639037/javajodakum.pdf
    • http://princessplie.us/uploads/1/3/0/4/130488101/bofom.pdf
    • http://thismediagency.com/uploads/1/3/0/7/130739781/vatugamawon-kaditomepa-xuborisapune-gilij.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_off00006a99.bin
efac65f11eca9ded21c6bcc55ba8da72a1b8dfbf6b36229835e53f035f2b322c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 8620 bytes

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