PDF malware analysis — malicious · 7b290b24a5eb6072

MALICIOUS

PDF

39.1 KB Created: 2020-08-30 21:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3da045e87456e8a843b554ebed5451f9 SHA-1: dfd5fcbe698d7d88732ba1e91fee14ce4f8d0d55 SHA-256: 7b290b24a5eb6072794d3bcbc4401c8eae9052e1c0ba053c8717ea99df1cd2eb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass external link farm, with many links pointing to benign Shopify URLs. However, one critical link, https://ttraff.cc/wix?keyword=a+sound+of+thunder+study+guide+answe, is identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting it is a study guide answer key, likely a lure to encourage clicking the malicious link. No scripts were extracted, and the primary malicious activity observed is the redirection via the embedded URL.

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=a+sound+of+thunder+study+guide+answe
- https://cdn.shopify.com/s/files/1/0432/4625/6295/files/berta_isla_javier_marias.pdf
- https://cdn.shopify.com/s/files/1/0435/1760/8090/files/bansuri_flute_lessons.pdf
- https://cdn.shopify.com/s/files/1/0452/0719/1701/files/child_and_adolescent_development_for_educators.pdf
- https://static.usrfiles.com/ugd/f459ea_08744fdcfeb942258dfa3bb7d435a9a3.pdf
- https://static.usrfiles.com/ugd/b8c837_13cec9d0f67f43a7acac605aaaaa5d1e.pdf
- https://static.usrfiles.com/ugd/b8c837_9af3265543474d41b4bdf191b94d007a.pdf
- https://static.usrfiles.com/ugd/7f929b_7d8bafa741ff4d57a78d8ed2e892ec07.pdf
- https://static.usrfiles.com/ugd/83e24f_433b7eccf7674685b7f0cab725897aa1.pdf
- https://static.usrfiles.com/ugd/b8c837_4afe074db90c414882ada8697861c3ba.pdf
- https://static.usrfiles.com/ugd/b8c837_bad49abe751b4e6fbf4d31c8e0ebd9e1.pdf
- https://static.usrfiles.com/ugd/b8c837_72ac287dc92f407fb616400383bbedd3.pdf
- https://static.usrfiles.com/ugd/5b604d_9dcc7a07186646969b2a379e44e9d951.pdf
- https://static.usrfiles.com/ugd/4dd980_f613b648a98442bf83f841ccbb35dcaa.pdf
- https://static.usrfiles.com/ugd/b0cd75_adfe34ae6b0f4a9dabc37ede31fd33ef.pdf
- https://static.usrfiles.com/ugd/b8c837_73d299d862fd4e2e9863d1280a5e008d.pdf
- https://static.usrfiles.com/ugd/b4a829_dc97fe8441f34f00af4d58717f4a59ff.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_off00005b1e.bin` `6da54731ff70e544d6a67ce5ce4e9c93c4014c2769bcd2cbc3b54fcfb2b5ecce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B1E	5320 bytes
`font_01_sfnt_off00006d41.bin` `5bc460211ad6ee1552c8297d5bed3ab56178625fabc24222403f2184518b5a96`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D41	10008 bytes

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