MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.
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.cc/pify?keyword=organelos+celulares+pdf+unam
- http://files.attentionruby.com/uploads/1/3/2/8/132814306/213619.pdf
- http://files.wppsfete.com.au/uploads/1/3/1/1/131164473/dumemokusipo.pdf
- http://bozoko.alternativetherapiesmayo.com/uploads/1/3/1/4/131437736/mulopoxebefew-roraxubebuzisuk.pdf
- https://cdn.shopify.com/s/files/1/0433/4708/3429/files/split_adobe_reader_online.pdf
- https://cdn.shopify.com/s/files/1/0431/6450/0122/files/causes_of_arusha_declaration_of_1967.pdf
- https://cdn.shopify.com/s/files/1/0436/1689/5133/files/anabolismo_bacteriano.pdf
- https://cdn.shopify.com/s/files/1/0432/5664/3739/files/audit_trail_in_qualitative_research.pdf
- https://cdn.shopify.com/s/files/1/0434/7750/0057/files/arithmetic_and_geometric_progression.pdf
- https://cdn.shopify.com/s/files/1/0434/2661/1356/files/after_20_years_story_in_english.pdf
- https://cdn.shopify.com/s/files/1/0434/0521/3847/files/ds2_titanite_chunk.pdf
- https://cdn.shopify.com/s/files/1/0431/5820/8674/files/55310814836.pdf
- https://cdn.shopify.com/s/files/1/0436/4831/9638/files/nominative_accusative_dative_german_table.pdf
- https://cdn.shopify.com/s/files/1/0433/1687/1336/files/1534344738.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_off0000641c.bin1956b30c90077c10308c6dab32a767fbc350ed3cd74a55fe9d6bc2cbd96892d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x641C | 5504 bytes |
font_01_sfnt_off000076be.binf6fdbd5d230b8016849bf9485593f6d38f32a4eb77043d9d63b5bc5b3ff6b96c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76BE | 10440 bytes |
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