PDF malware analysis — malicious · 552c5669647b9955

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 08:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 40c8db27ac88a70d0a6f192dbe8c89e9 SHA-1: 3838753eb55c9f3a7479163c20dfa06eaa9dcb30 SHA-256: 552c5669647b9955ea97c675d8ed91adc7dd38fc56c070276d54d5e76ec60c92

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=jim+hill+high+school'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which resolve to the 'static.usrfiles.com' domain. The document body, though heavily obfuscated, contains the same malicious URL and references to 'Jim Hill High School', suggesting a social engineering lure. The primary intent appears to be directing the user to the 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/wix?keyword=jim+hill+high+school
- https://static.usrfiles.com/ugd/b8c837_e28ad10048174f96ad44a077dbc55c73.pdf
- https://static.usrfiles.com/ugd/9dda13_04eda1a73eae40bfaeb73122d19a596b.pdf
- https://static.usrfiles.com/ugd/b8c837_d6130db66aeb4747bc5fd1d2e16091de.pdf
- https://static.usrfiles.com/ugd/b8c837_155ba0f02f494e728781041923348362.pdf
- https://static.usrfiles.com/ugd/b8c837_fbdc8e6b6902448cb83e89134be9ba4f.pdf
- https://static.usrfiles.com/ugd/71fd01_ce84cc670dbb481dabed4227060c40e8.pdf
- https://static.usrfiles.com/ugd/0aab01_488d61952e3e4232b9268607ee9d1a07.pdf
- https://static.usrfiles.com/ugd/77941b_63e4e29dde58420288c723be38f49171.pdf
- https://static.usrfiles.com/ugd/97368a_cead347cae16499db88c2c20fd61c40a.pdf
- https://static.usrfiles.com/ugd/b8c837_39ba440767614faface86cffa9614acd.pdf
- https://cdn.shopify.com/s/files/1/0431/7990/1096/files/cambridge_igcse_physics_notes.pdf
- https://cdn.shopify.com/s/files/1/0430/7743/5556/files/vakodose.pdf
- https://cdn.shopify.com/s/files/1/0431/4536/3610/files/86360509345.pdf
- https://static.usrfiles.com/ugd/7e6083_2259b9f5ce5c4e60b7153549397fcdaf.pdf
- https://static.usrfiles.com/ugd/4d6844_47cb28e8024c4444b39f400b600d84f3.pdf
- https://static.usrfiles.com/ugd/b8c837_6fab0fb2f8284ee8a177317f2dddbf43.pdf
- https://static.usrfiles.com/ugd/40512e_b734596211104b69b3c0dbe85a796d05.pdf
- https://static.usrfiles.com/ugd/b8c837_71abadd34b074b6fbf1a82c59012821b.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_off000059a2.bin` `8126216f7a86af3c1ebdaada8bd556c3e454c6b38bab1a8f97e28e09cb6446f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59A2	4896 bytes
`font_01_sfnt_off00006a2d.bin` `fdac234461a5d4faca5828277e3e23ceb3df84a6d389bf6a081843190556a572`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A2D	10368 bytes

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