MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.ru/pify?keyword=chinese+bilingual+visual+dictionary+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content.
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=chinese+bilingual+visual+dictionary+pdf
- http://files.usfitnessfreaks.com/uploads/1/3/0/7/130775659/fedcb1.pdf
- http://files.paintbytunnels.com/uploads/1/3/0/7/130775554/80f3c81716bf.pdf
- http://lurokixu.vjvhomeimprovements.com/uploads/1/3/1/8/131872225/c1fcd7bdb6da.pdf
- http://files.edgeproductions.ca/uploads/1/3/1/4/131437147/a1982cdea5fa.pdf
- https://cdn.shopify.com/s/files/1/0431/4267/6648/files/the_way_of_the_wolf.pdf
- https://cdn.shopify.com/s/files/1/0430/8487/3879/files/bipidadujadupijug.pdf
- https://cdn.shopify.com/s/files/1/0432/3701/5719/files/28738384532.pdf
- https://cdn.shopify.com/s/files/1/0427/4513/5260/files/6425551519.pdf
- https://cdn.shopify.com/s/files/1/0430/9290/2039/files/58896212719.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
- https://cdn.shopify.com/s/files/1/0434/8693/7253/files/77800996570.pdf
- https://cdn.shopify.com/s/files/1/0438/2579/1138/files/59867297402.pdf
- https://cdn.shopify.com/s/files/1/0432/2010/7424/files/62990612146.pdf
- https://cdn.shopify.com/s/files/1/0434/4843/4844/files/an_anthology_of_short_stories_icse.pdf
- https://cdn.shopify.com/s/files/1/0429/9387/7145/files/fonomegiwedukuk.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_off0000528a.bind241361b913db56460f7b8fab5de5ded61f4414e43a6ebd51bf49cbd20a8bcfe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x528A | 5624 bytes |
font_01_sfnt_off000065af.bina226ec89109c9556d4aa97edb8220627dc06c26974bf349aeffeb6f7b38ad0d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65AF | 10332 bytes |
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