PDF malware analysis — malicious · 659360e9a2da4ba5

MALICIOUS

PDF

50.0 KB Created: 2020-08-30 18:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7819cdd0679748428a90cfc34680c3d2 SHA-1: c2e711f107ecf916b1e0352d108e57fcecc590fe SHA-256: 659360e9a2da4ba59a95f4cd3c38af71ce0c3c846ecacbcf60e1a4ea17884697

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDF files, and a critical redirector URL. This indicates a link farm designed to direct users to potentially malicious or phishing content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=id+gemme+spirituelle+magistrale
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/1411/1903/files/zibatefoti.pdf
- https://cdn.shopify.com/s/files/1/0462/2863/5797/files/assetto_corsa_dlc_cars.pdf
- https://cdn.shopify.com/s/files/1/0428/7738/6911/files/christian_devotional_songs_tamil.pdf
- https://cdn.shopify.com/s/files/1/0432/5621/7750/files/to_file_khng_chnh_sa_c.pdf
- https://cdn.shopify.com/s/files/1/0440/7122/3446/files/disagojiroronizorikewedaf.pdf
- https://static.usrfiles.com/ugd/e3ed1f_f7beed8fa9634a489e1a276801549de5.pdf
- https://static.usrfiles.com/ugd/b8c837_d224297b83204df286bf3ea34a045d72.pdf
- https://static.usrfiles.com/ugd/136d07_6145795246b8493e92d586af5b8976b7.pdf
- https://static.usrfiles.com/ugd/b8c837_543fe0e90aaf452f897e7e3e7af5ab4e.pdf
- https://static.usrfiles.com/ugd/7e0eb0_54557d9c121645759b8df826538e157c.pdf
- https://static.usrfiles.com/ugd/badafb_6331aed7f80045558ac023653aed8a3c.pdf
- https://static.usrfiles.com/ugd/b8c837_4aa53e83b485432092f249e13e83c360.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007ea6.bin` `35803fc4e2094e30915e5d91852efc93318d9f70590c5c74a76d73bbc500ff26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7EA6	5216 bytes
`font_01_sfnt_off0000904e.bin` `03fb05e1518a6fe6590c4f9a9dc1ef76fb14159c2dd4e972d32d595e5ccc5f80`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x904E	13572 bytes

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