PDF malware analysis — malicious · 3aa064e706233e08

MALICIOUS

PDF

40.6 KB Created: 2020-09-01 14:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9ea601cecf96d917493495a5e40dc8b5 SHA-1: 6f5b581b8ea184390c99b1b550f935ccc6d02f6c SHA-256: 3aa064e706233e08a4180f3d0198a1eed31e0164a245046b560e690ee5135064

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL 'https://ttraff.cc/wix?keyword=all+software+serial+key+generator+free' is a clear indicator of a phishing or scam attempt, masquerading as a software serial key generator to entice clicks. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The presence of numerous links to Shopify-hosted PDFs, while many are benign, contributes to the overall SEO link farm characteristic, likely intended to improve search engine ranking for malicious content.

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=all+software+serial+key+generator+free
- https://cdn.shopify.com/s/files/1/0436/7866/2809/files/lovell_y_winter_ortopedia_pediatrica.pdf
- https://cdn.shopify.com/s/files/1/0434/4247/1064/files/lori_heldman_losey.pdf
- https://cdn.shopify.com/s/files/1/0437/1342/9655/files/xejasurebavet.pdf
- https://cdn.shopify.com/s/files/1/0428/0261/0335/files/12119818252.pdf
- https://cdn.shopify.com/s/files/1/0434/8857/5638/files/6863265462.pdf
- https://cdn.shopify.com/s/files/1/0430/8231/7991/files/year_end_summary_report.pdf
- https://static.usrfiles.com/ugd/87d215_432d00de798042f4b7f85193b54d878c.pdf
- https://static.usrfiles.com/ugd/b8c837_b9a42f47445e48849989b37a702e4ada.pdf
- https://static.usrfiles.com/ugd/b8c837_6836a9617dd74fd388871391ef6bd062.pdf
- https://static.usrfiles.com/ugd/b8c837_0c283542dd054f8287c4545160b60715.pdf
- https://static.usrfiles.com/ugd/8a419d_081b47ad02a246a5a5be5cf021c4b7e9.pdf
- https://static.usrfiles.com/ugd/1cc7e8_49879c76a9684e11a406c0da5b161362.pdf
- https://static.usrfiles.com/ugd/3bf302_73cc9fca48d646b7b3ed182d3178ace7.pdf
- https://static.usrfiles.com/ugd/dcfb95_bfec6dee6b9948ce8ba08b33c50aa019.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_off0000612a.bin` `fe9ea58a135a611ab23d9298634d270288f8a7f568a00d73e54558f3ee07e640`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x612A	5180 bytes
`font_01_sfnt_off000072fd.bin` `0e22c670b6e95c8ad8ee7a7673c6cc24f721c93d4a429908248573725e6bce80`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72FD	10232 bytes

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