PDF malware analysis — malicious · cdb4de5357bddb7c

MALICIOUS

PDF

46.3 KB Created: 2020-09-18 12:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9fa0057e161e3a50159a5123854fd3b3 SHA-1: 051b05120edfee87260f269a77376732c4b54742 SHA-256: cdb4de5357bddb7c31951b2fe77e6f3ebbf737fd9aaeaad0e203fa5e63fb3217

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that masquerades as search results for a movie, aiming to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The ML classifier strongly supports the malicious nature of this PDF.

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.me/wix?keyword=el+cartel+de+los+sapos+pelicula+personajes
- http://savife.jason-fritz.com/uploads/1/3/1/4/131437676/rofinizeporafebetefi.pdf
- http://bokeg.woodbrookhuntponyclub.com/uploads/1/3/0/7/130739802/a2f14acc9e5.pdf
- http://bakuvoki.vandersystreefarm.com/uploads/1/3/1/3/131379070/9027630.pdf
- http://lekezox.blindsanddecors.com/uploads/1/3/0/7/130776454/90b3140a19.pdf
- http://files.maryellendearstyneantiques.com/uploads/1/3/1/4/131452883/fadaforakezumanedoba.pdf
- https://8d6ffb74-5112-492d-befa-509f00ea768e.filesusr.com/ugd/a0905b_f2aa5f4ed5df40e08a1fc6fb904d36e1.pdf?index=true
- https://f7bc2ecc-05de-485e-8664-6acbacd1414f.filesusr.com/ugd/370ea2_dd47a6d8d9f841bea1be835f93c188a3.pdf?index=true
- https://f3157146-8126-4009-a22c-c0c259cea164.filesusr.com/ugd/bba345_204c719e481c4e1eb4fa4c474fb510d6.pdf?index=true
- https://99623345-4880-4b48-8ee4-851bdc0910fb.filesusr.com/ugd/dba42a_459f54d1e78c42f492e32b671ed57805.pdf?index=true
- https://cf63fac5-4892-4f76-a069-d3378b40c270.filesusr.com/ugd/b1b3ad_5dbe058353004202818bfffb50c61ed5.pdf?index=true
- https://06057292-8c49-467f-a4ee-5aa26a5f8aff.filesusr.com/ugd/96768c_b8bc767137c24d36b3848db4a27ae765.pdf?index=true
- https://4993e6d3-a430-451a-a91b-10fdff1fcbf8.filesusr.com/ugd/50de67_4da3c84106d54e51b12ce3226451bdba.pdf?index=true
- https://cdn.shopify.com/s/files/1/0433/4750/9416/files/11528301685.pdf
- https://cdn.shopify.com/s/files/1/0428/4622/4551/files/bengali_rannar_boi.pdf
- https://cdn.shopify.com/s/files/1/0428/1679/8883/files/ereading_worksheets_author_s_purpose.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_off00007330.bin` `d55c2f00240a6821dca082363af8c5c54bfe5a0d60ff0a37de90d2ed1ed621e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7330	5100 bytes
`font_01_sfnt_off0000849f.bin` `8d73f2b239cc7d7fe65eaf6cdeefedc73c6289b7be6abd3fb0d4aea925c5c52e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x849F	11460 bytes

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