MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wb?keyword=sistema%20inmune%20celular%20y%20humoral%20pdf, which is likely intended to trick the user into clicking through to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the 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.cc/wb?keyword=sistema%20inmune%20celular%20y%20humoral%20pdf
- http://nojaga.nhddenver.org/uploads/1/3/1/3/131383314/fusuduwinusowan.pdf
- http://fenaguta.michaelspauley.com/uploads/1/3/1/8/131856584/dakaja_lodoseginepate_jimedezedupegi.pdf
- http://files.foresideandalusianstud.com/uploads/1/3/0/8/130813764/muwif.pdf
- https://cdn.shopify.com/s/files/1/0429/1877/2903/files/galininiwedomosili.pdf
- https://cdn.shopify.com/s/files/1/0439/8543/6830/files/data_abstraction_and_problem_solving_with_c_solution_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/1502/0448/files/48887540728.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.pdf
- https://cdn.shopify.com/s/files/1/0432/9160/7190/files/the_language_of_desire_free_download.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fusuzirosaf.pdf
- https://cdn.shopify.com/s/files/1/0440/0339/3694/files/saxon_math_1st_grade.pdf
- https://cdn.shopify.com/s/files/1/0434/0668/8412/files/the_young_like_it_hot.pdf
- https://cdn.shopify.com/s/files/1/0431/5355/5624/files/1648876971.pdf
- https://cdn.shopify.com/s/files/1/0439/3415/4907/files/16355947898.pdf
- https://cdn.shopify.com/s/files/1/0436/9979/8166/files/73527484828.pdf
- https://cdn.shopify.com/s/files/1/0428/9812/9059/files/jidinivijego.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_off000069b2.bin4911335a93ec702944c59ed0058aef2bb56198ae283bafd6f79887dac9f7436a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69B2 | 5600 bytes |
font_01_sfnt_off00007c8a.bine793dcfc6529eee9814924b607fcfbb1006b76bd646a1a7801a70c10e6edc7c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C8A | 13888 bytes |
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