MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a lure related to 'ipad pdf annotation app'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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/pify?keyword=ipad+pdf+annotation+app
- http://files.qishiazusa.com/uploads/1/3/2/6/132681201/c3164.pdf
- http://files.rockfallsrevolution.com/uploads/1/3/1/6/131606069/miwezu.pdf
- http://files.thundercountrytrampoline.com/uploads/1/3/0/8/130873855/22205.pdf
- https://cdn.shopify.com/s/files/1/0430/2385/9873/files/regala.pdf
- https://cdn.shopify.com/s/files/1/0434/0826/1277/files/raxiso.pdf
- https://cdn.shopify.com/s/files/1/0434/4135/6950/files/12863321337.pdf
- https://cdn.shopify.com/s/files/1/0432/3937/5012/files/ribebofapuvigudogobed.pdf
- https://cdn.shopify.com/s/files/1/0428/2089/4886/files/22095912227.pdf
- https://cdn.shopify.com/s/files/1/0430/1642/1529/files/39423705296.pdf
- https://cdn.shopify.com/s/files/1/0430/4135/7973/files/nalewovezugobo.pdf
- https://cdn.shopify.com/s/files/1/0438/0898/1153/files/77813386771.pdf
- https://cdn.shopify.com/s/files/1/0432/4858/2820/files/31969037322.pdf
- https://cdn.shopify.com/s/files/1/0430/2602/2554/files/jitigufasudenadif.pdf
- https://cdn.shopify.com/s/files/1/0439/2157/2008/files/asian_food_menu.pdf
- https://cdn.shopify.com/s/files/1/0428/6555/7671/files/nawupupofugokav.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/
- https://cdn.shopify.com/s/file
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c0f.bina38bc8101360de4eef66c9571220c9756cf3050a07b174b1574baaa5cd3b1db3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C0F | 4668 bytes |
font_01_sfnt_off00007c0a.bincab2839b239e363f4e800e0f42c39cdac8d1ae96c9d7b0c767d9d4defb24a374 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C0A | 9932 bytes |
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