PDF malware analysis — malicious · d799b03fe847b4e1

MALICIOUS

PDF

39.3 KB Created: 2020-09-01 12:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 717e5d122e8b97f006cf58072883973d SHA-1: 12f5354b10cac46f41042c7f3080ed23a7451a09 SHA-256: d799b03fe847b4e157519bb68827b77ef39f24f0a5dd49cb1c71305449a3096d

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text that appears to be a lure related to popular media ('bts dna mp4 video song'). This suggests the primary goal is to direct users to malicious sites, likely for phishing or to download further malware. The heuristic firings confirm the presence of malicious redirector links and a link farm.

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.link/wix?keyword=bts+dna+mp4+video+song
- https://static.usrfiles.com/ugd/b8c837_7dd8aa1f5fb74c2fb303887fcf4ac9e6.pdf
- https://static.usrfiles.com/ugd/c8d394_d5fd4920cee349a5ba9fe260d48acc3b.pdf
- https://static.usrfiles.com/ugd/c0b427_2684c08114aa4e6c8067e73ac94f0f91.pdf
- https://static.usrfiles.com/ugd/b8c837_87d4afba8bcf4aff8f54b9396dfdaab7.pdf
- https://static.usrfiles.com/ugd/3f80ec_7b56cb0bf71e4c018b22c1804eac0a5d.pdf
- https://static.usrfiles.com/ugd/221f3a_1bdb0d0cdea2461bb1ad30ad620c1f56.pdf
- https://static.usrfiles.com/ugd/822ecd_0e67120310054f5e906ee0757ba90979.pdf
- https://static.usrfiles.com/ugd/e6092c_788d62266fd54ff7b0f7067d8892599d.pdf
- https://static.usrfiles.com/ugd/162fe6_3c7a100d9e854f6083cbb7c3aeb8f10d.pdf
- https://static.usrfiles.com/ugd/5e81b9_5ecdd8dd7482456f85b034f04f7ae184.pdf
- https://cdn.shopify.com/s/files/1/0438/9378/4728/files/nirusenetunilazefewu.pdf
- https://cdn.shopify.com/s/files/1/0435/8147/2929/files/rudos.pdf
- https://cdn.shopify.com/s/files/1/0428/9105/1161/files/budgeting_process_in_kenya.pdf
- https://cdn.shopify.com/s/files/1/0457/7371/7660/files/greenfields_brothers_four_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0462/4475/7655/files/17187327129.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_off00005078.bin` `738a8fbe39b0abc0ed4cfacb48f985fe6f2885ba1155139baedb3c0f3c53785e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5078	3136 bytes
`font_01_sfnt_off00005baf.bin` `bbe64c6c3ca081e309a7b5c5c2d5dabcee108d874141003a7dd045803793ecaa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BAF	5348 bytes
`font_02_sfnt_off00006de7.bin` `b9c78ee87b6cd190ed8af878e00d0bc14120e79faa13742934857d9445d65af9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DE7	9944 bytes

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