PDF malware analysis — malicious · 8c44c2fa00245e2a

MALICIOUS

PDF

36.5 KB Created: 2020-09-20 12:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 022fdc416708c1fbafe4e37e7740b158 SHA-1: 19660fdf2c0629bca1c192ea450dc3cecab62456 SHA-256: 8c44c2fa00245e2a8b6555f80e8ceece91305099b38de88d89c0194b31cd09c8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to malicious infrastructure, disguised as a job search for 'Shake Shack careers UK'. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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 https://ttraff.com/wb?keyword=shake%20shack%20careers%20uk
- http://files.nealpersoneus.com/uploads/1/3/0/7/130739498/1798032.pdf
- http://files.limadrivesdachurch.org/uploads/1/3/1/0/131070501/1610080.pdf
- http://files.thedivinesophia.com/uploads/1/3/1/4/131437210/3499799.pdf
- http://files.jacollierville.org/uploads/1/3/0/7/130739570/6664852.pdf
- http://wubuzu.enchantinteriors.com/uploads/1/3/2/3/132303001/8325065.pdf
- http://files.cranbrookdistrictteachersassociation.com/uploads/1/3/1/8/131871494/8c401b.pdf
- http://javed.patriotspointblendedlearning.com/uploads/1/3/1/4/131454035/3272026626f3.pdf
- http://lalexisam.jeannekipke.com/uploads/1/3/0/8/130874019/zuzojovawubebekasar.pdf
- http://nufuzopi.rmppublications.com/uploads/1/3/0/9/130969742/17d4b6.pdf
- https://d2091a1b-3fe6-4490-8620-7b98025d8ee2.filesusr.com/ugd/430cb2_dc1078e48f7e42be8bed0969ea66c34d.pdf?index=true
- https://fe23d71c-6314-47ba-87c8-c8766af93e55.filesusr.com/ugd/6f9b04_72e923d3635544849e0a278897e1a219.pdf?index=true
- https://6dde3fb5-79dc-4302-b446-2f0329ebb4c1.filesusr.com/ugd/bf0735_11e047627e9c4b9dbbb5abef0c7b5b1d.pdf?index=true
- https://56bb1b55-9863-499d-aee8-99df14acf1da.filesusr.com/ugd/a9248e_b57bcb05ba9346eb886a237b0c493b35.pdf?index=true
- https://cdn.shopify.com/s/files/1/0434/7727/0692/files/riluwogugosudede.pdf
- https://cdn.shopify.com/s/files/1/0431/5663/5816/files/49263446453.pdf
- https://cdn.shopify.com/s/files/1/0434/6114/8832/files/zefitedobojural.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005036.bin` `35461b36beb9d76c619aea709b32d7cb49b5254cf71914bcc50fe99ff5d4aed7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5036	5024 bytes
`font_01_sfnt_off00006142.bin` `1c9fa78dc5bed51d0ceca0f4e5dd70280cd01976dc715b0bfc53105258c9d079`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6142	10540 bytes

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