PDF malware analysis — malicious · f9f12135093c3c3a

MALICIOUS

PDF

35.2 KB Created: 2020-08-30 00:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0370cf78e9257f224c46b8e90152815e SHA-1: 32191a42949cf665c912e5d48040695a8334addb SHA-256: f9f12135093c3c3a89b07cad87f6c2da7059a54c51b8c754ee5545942c46045f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, 'https://ttraff.ru/wix?keyword=dirt+the+movie+answer+key', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a link farm or redirection tactic. The primary intent appears to be directing the user to malicious infrastructure under the guise of providing an answer key.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.ru/wix?keyword=dirt+the+movie+answer+key
- https://static.usrfiles.com/ugd/b8c837_70daa1f1fdf1455cbc981c6cfc1217fe.pdf
- https://static.usrfiles.com/ugd/b8c837_99fad0fd65e749edbd69c1ff0b3a1c86.pdf
- https://static.usrfiles.com/ugd/f55bec_fd6c2e9d5c5d413ea60591db6f22ac20.pdf
- https://cdn.shopify.com/s/files/1/0435/9444/9055/files/55494512017.pdf
- https://cdn.shopify.com/s/files/1/0434/5122/0120/files/sonam.pdf
- https://cdn.shopify.com/s/files/1/0432/7378/1411/files/rezivigawabibav.pdf
- https://cdn.shopify.com/s/files/1/0432/2266/3325/files/64918143756.pdf
- https://cdn.shopify.com/s/files/1/0435/6574/4287/files/canberra_suburbs_map.pdf
- https://static.usrfiles.com/ugd/5d2cf3_9cb55fe3e9ae4b11b076a575fec78771.pdf
- https://static.usrfiles.com/ugd/b8c837_506724a12a4b45fea7f9a92acaa957f0.pdf
- https://static.usrfiles.com/ugd/b8c837_5d1585b03d2447ef80abc8ce87e08c31.pdf
- https://static.usrfiles.com/ugd/07ef24_93481109410c44e49b8ce99ecf2b0fd7.pdf
- https://static.usrfiles.com/ugd/b8c837_3716386159e84bb3a521068b19b856cb.pdf
- https://static.usrfiles.com/ugd/b8c837_ec1ea55b0693425088bdb0b50bb75064.pdf
- https://static.usrfiles.com/ugd/6908d7_33351d22fe2441ae81c43a862ec63a74.pdf
- https://static.usrfiles.com/ugd/b8c837_a11de11dcac94997b71c16250d4e173c.pdf
- https://static.usrfiles.com/ugd/08fe48_b524f7aaa1134020b297820d47d930f9.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_off00004bc7.bin` `39739155560deaf944f098f6da4ecd6e1f2e4622ba2fb052beec3a6bd158d47d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BC7	5208 bytes
`font_01_sfnt_off00005d73.bin` `1f6a011b4ac0a7cbc926a8ce677ca3dd97a45d62c13052a04367139b1d998ce6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D73	10152 bytes

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