MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many pointing to external PDF files, characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=fractions+and+percentages+worksheets+year+5, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The sample's purpose appears to be to distribute or link to other 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=fractions+and+percentages+worksheets+year+5
- http://files.windsoressexcpr.com/uploads/1/3/0/9/130969740/komenijejitutivep.pdf
- http://files.sextonslegal.com/uploads/1/3/1/4/131482878/4120390.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/9578/4600/files/kuletigipizutivuv.pdf
- https://cdn.shopify.com/s/files/1/0431/5247/4267/files/70966022347.pdf
- https://cdn.shopify.com/s/files/1/0427/3173/3159/files/durikibuviz.pdf
- https://cdn.shopify.com/s/files/1/0432/6929/2188/files/beats_x_earphones_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/2485/0842/files/94313234445.pdf
- https://cdn.shopify.com/s/files/1/0436/3331/1904/files/betapavorujijo.pdf
- https://cdn.shopify.com/s/files/1/0435/4097/1674/files/5302014590.pdf
- https://cdn.shopify.com/s/files/1/0432/2823/3883/files/food_crossword_puzzles.pdf
- https://cdn.shopify.com/s/files/1/0433/4118/5189/files/5156344463.pdf
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/50328623940.pdf
- https://cdn.shopify.com/s/files/1/0436/1243/8685/files/libros_de_isabel_allende_paula.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojezurin.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_off00007158.bin81834bde80c680ace21f3f5cf4e76fa2eda804703547e0c4d15dd95582b380de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7158 | 5640 bytes |
font_01_sfnt_off0000849e.bin0c61ed596d79ad7cf07849dc738129c85dce25b029b87dcf563605b642f65b27 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x849E | 10468 bytes |
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