PDF malware analysis — malicious · bf7502efbb31c403

MALICIOUS

PDF

48.2 KB Created: 2020-08-03 16:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6cd6d39493832f9cc27671e1b0e441dc SHA-1: a387cfaf73349d5c24456b56937d62c70e9069df SHA-256: bf7502efbb31c403b773eccef4dc9ecd44e73db26718390643d8fe43d81f7b0e

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=po%25C3%25A9tica+arist%25C3%25B3teles+pdf'. This indicates an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The primary attack pattern is a lure to a malicious redirector.

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/pify?keyword=po%25C3%25A9tica+arist%25C3%25B3teles+pdf
- http://files.projectxlacrosse.com/uploads/1/3/0/7/130739059/bexelosamogusijuv.pdf
- http://files.adascrafts.com/uploads/1/3/0/7/130775520/9480893.pdf
- http://files.thewheelhousegrill.com/uploads/1/3/1/8/131856392/zobazo.pdf
- http://files.kdyllon.com/uploads/1/3/1/8/131856815/3455629.pdf
- http://files.houseofblackart.com/uploads/1/3/1/3/131383743/1357375.pdf
- https://cdn.shopify.com/s/files/1/0431/5712/7336/files/4643845611.pdf
- https://cdn.shopify.com/s/files/1/0437/3364/7525/files/4178266920.pdf
- https://cdn.shopify.com/s/files/1/0432/7918/8118/files/zoduxibow.pdf
- https://cdn.shopify.com/s/files/1/0432/9986/4734/files/sepokejuwofe.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89352644259.pdf
- https://cdn.shopify.com/s/files/1/0432/2256/5032/files/pebesilesa.pdf
- https://cdn.shopify.com/s/files/1/0437/6772/6232/files/banefegapawamakige.pdf
- https://cdn.shopify.com/s/files/1/0434/9899/5877/files/sanuvowudisik.pdf
- https://cdn.shopify.com/s/files/1/0429/3754/8959/files/ruwowemajupibinesuz.pdf
- https://cdn.shopify.com/s/files/1/0445/8138/8452/files/subnautica_how_to_recharge_battery.pdf
- https://cdn.shopify.com/s/files/1/0428/4832/1692/files/liwerimisotunaremiw.pdf
- https://cdn.shopify.com/s/files/1/0429/2935/6959/files/toefl_practice_test_sample_pdf.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_off00007a3e.bin` `db329d3c12d7a092cb12d53fd9c1d0cd354f50271e8c92dd17cae43ebaa581ae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A3E	5428 bytes
`font_01_sfnt_off00008c35.bin` `0d2e3bd06c73a00faade5db070b6e6f0e7bc533c9c2085257a8b791ed7c70c11`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C35	11608 bytes

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