PDF malware analysis — malicious · 31016172d5c76ce7

MALICIOUS

PDF

58.2 KB Created: 2020-08-29 05:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7f75dde07cdadd27778cd6a808f35c00 SHA-1: a3b920fc7cbd51df34ffaa984d4fa0abb7cb4cce SHA-256: 31016172d5c76ce7f05ac44dee66c613867a6fd10fc87583f38984a502209c66

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=calculer+vitesse+de+coupe'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/b8c837_42e1384639084a63aabb4bc8a5e5322d.pdf' being one of the benign-reputation links in the farm. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect the user to a potentially harmful site.

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.cc/wix?keyword=calculer+vitesse+de+coupe
- https://static.usrfiles.com/ugd/b8c837_42e1384639084a63aabb4bc8a5e5322d.pdf
- https://static.usrfiles.com/ugd/b8c837_4d14f47df3fb483dbf36fe1f467e8e41.pdf
- https://static.usrfiles.com/ugd/b8c837_ec925e2f30cc4cc69696953a6fa378ec.pdf
- https://static.usrfiles.com/ugd/b8c837_5bb86361a6684cd9b42b940a0947f070.pdf
- https://static.usrfiles.com/ugd/b8c837_a0ceddf403b143729d3ccc3664af659f.pdf
- https://static.usrfiles.com/ugd/b8c837_57f22b90c1c349beb4dee70e8a6f115d.pdf
- https://static.usrfiles.com/ugd/b8c837_fc9de732a40d4fd882d96846ff007a36.pdf
- https://cdn.shopify.com/s/files/1/0437/7001/9998/files/sonijijeredetap.pdf
- https://cdn.shopify.com/s/files/1/0433/2044/3045/files/50832705163.pdf
- https://cdn.shopify.com/s/files/1/0430/4617/4877/files/osrs_money_making_guide_2018_p2p.pdf
- https://cdn.shopify.com/s/files/1/0432/9419/5870/files/kunuko.pdf
- https://cdn.shopify.com/s/files/1/0437/6638/2749/files/national_building_information_modeling_standard.pdf
- https://cdn.shopify.com/s/files/1/0449/3272/6952/files/60239715345.pdf
- https://cdn.shopify.com/s/files/1/0435/3199/3242/files/classroom_rules_template.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000088a6.bin` `bc7ef7af1d86191becb29283162d385340656b3ffa47686908d08872925046c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88A6	4928 bytes
`font_01_sfnt_off0000997f.bin` `f8c172f32d6505a14ee9cc93c7450ac6e2bb8fd3f23dca73db5f2c1d4328699d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x997F	17308 bytes
`font_02_sfnt_off0000cc4d.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC4D	4324 bytes

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