PDF malware analysis — malicious · f5912b806edee266

MALICIOUS

PDF

48.6 KB Created: 2020-08-31 09:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0615ea9d9948733926175957c3dd8e03 SHA-1: 709362d091a51f6383518b9a6b0daabc749fdb43 SHA-256: f5912b806edee2663cee6491ea34eb9b738e602685046d48c1540cb73920b68b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document exhibits characteristics of a malicious redirector, as indicated by the critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. It contains a large number of embedded links, with one pointing to a known malicious redirector infrastructure at `https://ttraff.cc/wix?keyword=organigramme+de+l%2527%25C3%25A9cole+maternelle`. The presence of a PDF_SEO_LINK_FARM heuristic further suggests an attempt to distribute malicious content through a link farm. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wix?keyword=organigramme+de+l%2527%25C3%25A9cole+maternelle
- https://cdn.shopify.com/s/files/1/0430/6649/1042/files/xowilegakinegeke.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94430640368.pdf
- https://cdn.shopify.com/s/files/1/0463/0695/1328/files/cambridge_audio_dacmagic_plus_driver.pdf
- https://cdn.shopify.com/s/files/1/0436/3531/0752/files/bartok_romanian_folk_dances_violin.pdf
- https://static.usrfiles.com/ugd/2b25e8_17ad50c4b7ba472d8ad0ad887c6e29c1.pdf
- https://static.usrfiles.com/ugd/5be868_c485e0cc527644b8a461c135a149f3ca.pdf
- https://static.usrfiles.com/ugd/2b25e8_2758d5c860bc471495a0781fde661cfb.pdf
- https://static.usrfiles.com/ugd/0047a4_03523b38676c479eb058871672fafcf3.pdf
- https://cdn.shopify.com/s/files/1/0430/1484/8671/files/burrito_boyz_nutritional_information.pdf
- https://cdn.shopify.com/s/files/1/0434/6681/7689/files/hollywood_movies_free_website.pdf
- https://static.usrfiles.com/ugd/5af86b_2a4e86d9babf47b7855602d8e94f0031.pdf
- https://static.usrfiles.com/ugd/b8c837_b54a9d3abc9d49a990bfec7a8d823e08.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005d77.bin` `a191d702c196183069d170b5bfaddc2c33ca2fb8b40d69c614642ce552f1025d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D77	5284 bytes
`font_01_sfnt_off00006f05.bin` `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F05	1800 bytes
`font_02_sfnt_off00007792.bin` `e2b2bac024705ebb6a4d071fcbf096e5248e88f7fca7b718d803481d21e39f34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7792	11724 bytes
`font_03_sfnt_off00009d6e.bin` `975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D6E	16312 bytes

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