PDF malware analysis — malicious · 0c14bcfee0028498

MALICIOUS

PDF

80.7 KB Created: 2020-09-09 00:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 05bb70b88c14430e0eec739a2f4accda SHA-1: 5f742cdc403c027442148186f5370931905eb48d SHA-256: 0c14bcfee0028498604e2ad0305f5c92d77027e68ff8068dd72e769030c87987

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to an 'Illinois boat bill of sale' and a URL that appears to be part of a link farm designed to attract search engine traffic. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent, likely to redirect users to malicious content or phishing sites.

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.com/wix?keyword=illinois+boat+bill+of+sale+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/7125/0336/files/vivah_full_movie_123mkv.pdf
- https://cdn.shopify.com/s/files/1/0433/2853/6734/files/90582392006.pdf
- https://cdn.shopify.com/s/files/1/0429/2263/9527/files/lazizelisaxuzakugifav.pdf
- https://cdn.shopify.com/s/files/1/0429/1634/8057/files/wotakifutotu.pdf
- https://cdn.shopify.com/s/files/1/0434/2641/4743/files/70472913447.pdf
- https://static.usrfiles.com/ugd/911c12_c2b547fccc7642798dcf2c3c1d9e9d6b.pdf
- https://static.usrfiles.com/ugd/2f3ac6_55ad37203ff24b878faf67278ab24b72.pdf
- https://cdn.shopify.com/s/files/1/0431/1721/5905/files/9085901808.pdf
- https://cdn.shopify.com/s/files/1/0428/5608/7708/files/67022865117.pdf
- https://cdn.shopify.com/s/files/1/0428/9868/6111/files/conditional_formatting_google_sheets_ipad.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_off0001018e.bin` `816440e6fdd454e1fb61105e7559abc4a823a18e72c89109769cdd8a7c17cef2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1018E	5016 bytes
`font_01_sfnt_off000112b1.bin` `bafd45fabe862a76b930c9c2664fd5b3550ead0ab4dbc45d3eb4873391c8dc47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112B1	10420 bytes

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