MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to educational materials, suggesting a lure to disguise the malicious intent. The presence of embedded URLs and the ML classifier's high confidence indicate malicious activity, likely an attempt to redirect users to a malicious site for further exploitation.
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=cambridge+primary+english+book+5+answers
- http://files.foodsourceatlanta.com/uploads/1/3/0/8/130813461/gevobajigok-dadejuzov-tigosowu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0434/8208/7576/files/fafigusoribijepom.pdf
- https://cdn.shopify.com/s/files/1/0428/2191/0694/files/74424192497.pdf
- https://cdn.shopify.com/s/files/1/0437/8948/4194/files/lojapuzeputobejaseni.pdf
- https://cdn.shopify.com/s/files/1/0437/8863/2213/files/fufoxafujufuzike.pdf
- https://cdn.shopify.com/s/files/1/0431/6764/5857/files/general_chemistry_mcquarrie.pdf
- https://cdn.shopify.com/s/files/1/0437/7447/6440/files/data_analysis_tools_in_spss.pdf
- https://cdn.shopify.com/s/files/1/0430/8277/6727/files/metabolisme_energi_otot_jantung.pdf
- https://cdn.shopify.com/s/files/1/0434/7641/8720/files/sql_nested_query.pdf
- https://cdn.shopify.com/s/files/1/0429/7719/8229/files/edgar_allan_poe_poesa_completa.pdf
- https://cdn.shopify.com/s/files/1/0433/8286/6072/files/89763189250.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000043a7.binfd667f2614da2846f49b4fe236c528093e38bb3bd5f0049b7b49a9ba8bc99f8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x43A7 | 5624 bytes |
font_01_sfnt_off000056a5.binb951cbd8fbea132287db9a21490e3ade46167cdf6cd79a380971729708b0745e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56A5 | 9968 bytes |
font_02_sfnt_off000078ba.bin05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78BA | 4324 bytes |
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