Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8dadc76a499ffe…

MALICIOUS

PDF

35.9 KB Created: 2020-05-25 07:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 410237efc94f2e1c02d6057dcc78ed1e SHA-1: 263d6ef5b242532271bfeb51daccdc7add60cc50 SHA-256: 7b8dadc76a499ffe73f9bfeeba75bf2e4e31640507fed9d3d3e87223ec09a96c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, indicating a link farm designed to redirect users to other malicious PDF files. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. The document body itself is largely unreadable, but the presence of URLs and the heuristic firing are sufficient to determine the attack pattern. 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://nobordersadventure.voyagerwebsites.com/uploads/1/3/0/5/130543877/130543877.html#free+templates+for+40th+birthday+inv
    • http://varietyvoice.com/uploads/1/3/1/1/131164425/miwumeva.pdf
    • http://youvswild.co.nz/uploads/1/3/1/3/131398095/zazukudaso_milovidufadifab_bonalipivi.pdf
    • http://ashleygrandkoskiacupuncture.com/uploads/1/3/0/2/130270742/giwefosusiso.pdf
    • http://craigweflen.com/uploads/1/3/0/7/130739399/8774899.pdf
    • http://hostmaster.beautifulroomsinluton.co.uk/uploads/1/3/0/5/130545096/vusebogusepi_pejagagukavofe.pdf
    • http://adamstrucking.info/uploads/1/3/0/2/130272496/pideg.pdf
    • http://thomasconnection.com/uploads/1/3/1/4/131408086/luxetibudonedev.pdf
    • http://cheekschickenwaffleswethersfield.com/uploads/1/3/0/6/130621607/2638240.pdf
    • http://declandigital.com/uploads/1/3/1/4/131407312/danunuvibetubedewox.pdf
    • http://queenchelseaboo.com/uploads/1/3/0/6/130604981/fdb908.pdf
    • http://qh.undesirable.us/uploads/1/3/0/2/130289577/840f831700.pdf
    • http://mopolitics.net/uploads/1/3/0/8/130814714/6e2f3dc9b8.pdf
    • http://calgaryautoglassreplacement.com/uploads/1/3/1/6/131606365/0dc353e308c0b49.pdf
    • http://mail.michaelmaguire.com.au/uploads/1/3/0/5/130539241/7d049.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_off00006281.bin
3ca849c388d1f4cc47a9097301e7959e8a4766ba80d4593df05aeb9cec392216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6281 9840 bytes

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