PDF malware analysis — malicious · 3c8d588cc5709db6

MALICIOUS

PDF

44.9 KB Created: 2020-08-29 21:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3dd2b96f6d36ad9417e1d6cc7e4faeff SHA-1: c6cecb0810b32f2a14d800c2acfe0612593c3048 SHA-256: 3c8d588cc5709db67db82c0a4adf9e2193e84b2fd0f6c67f2e38c3b8aececcd1

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure text suggesting a resignation acceptance letter, which is a common social engineering tactic. It embeds multiple links, with one pointing to a known malicious redirector at 'ttraff.com'. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating an attempt to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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=sample+resignation+acceptance+letter+from+employer
- https://static.usrfiles.com/ugd/b8c837_c0f4b80d85d444b39ac73b639e11c68e.pdf
- https://static.usrfiles.com/ugd/0779a3_81ccdcc726be476bb3bf0ef3b73904d6.pdf
- https://static.usrfiles.com/ugd/e5cbe5_70153d93384c45058b6dc1d6acab79e7.pdf
- https://static.usrfiles.com/ugd/b8c837_1b6e61671bf14258ab38b24dae5e0cb3.pdf
- https://static.usrfiles.com/ugd/a298ce_b54138c988ef4370b907fe72fd63b516.pdf
- https://static.usrfiles.com/ugd/b8c837_5f35e69666394c26ba122993f94d4a6d.pdf
- https://static.usrfiles.com/ugd/b8c837_547b6c285d3e4beda19b1578de8cca8a.pdf
- https://static.usrfiles.com/ugd/b8c837_67a5ee8dde504dfd8d09119a4d987df7.pdf
- https://static.usrfiles.com/ugd/b8c837_cc6933162151455281b8f86a392b2165.pdf
- https://cdn.shopify.com/s/files/1/0431/7023/4527/files/pdf_sociologie_rurale.pdf
- https://cdn.shopify.com/s/files/1/0429/6540/1753/files/game_of_thrones_1._sezon_5._blm_altyazl_izle.pdf
- https://cdn.shopify.com/s/files/1/0438/1881/1552/files/libro_para_pintar_dinosaurios.pdf
- https://cdn.shopify.com/s/files/1/0431/0227/3703/files/29258826782.pdf
- https://cdn.shopify.com/s/files/1/0430/5109/0077/files/26969008938.pdf
- https://static.usrfiles.com/ugd/b8c837_114e5d7d0dcc4541a4bc9ba8b55104f5.pdf
- https://static.usrfiles.com/ugd/b8c837_75560a67bc894a448044a18ddd58077f.pdf
- https://static.usrfiles.com/ugd/b8c837_bd3b8e362a2e4060896fd3ae632f73cd.pdf
- https://static.usrfiles.com/ugd/b8c837_91bd76de3e76456eaec83261e4df3258.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_off00007019.bin` `752aab29a045290ff2a769cd672694ac6e0327cbad96054a807bd2844eb06fb6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7019	5540 bytes
`font_01_sfnt_off000082e1.bin` `007bb35d1ead483a3ab0e31bbd20cb6f911928a2b21a66d13d99476100017c4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82E1	10444 bytes

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