MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious domain, ttraff.cc. This suggests a link farm or redirection scheme designed to lead users to malicious content under the guise of providing free educational material. The ML classifier also strongly indicated maliciousness.
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=curso%20completo%20de%20electricidad%20automotriz%20pdf
- http://files.kristasharmonymusicstudio.ca/uploads/1/3/1/4/131482941/padutanele.pdf
- http://files.negleyelementarypta.com/uploads/1/3/1/3/131383630/wikuxukiledodadev.pdf
- http://files.creativeartinfo.com/uploads/1/3/1/4/131437949/6836672.pdf
- http://files.tumaytunur.com/uploads/1/3/0/9/130969389/zetamonawodadat.pdf
- http://files.bencheetham.com/uploads/1/3/1/8/131856725/vuminafaw.pdf
- https://cdn.shopify.com/s/files/1/0429/8034/3967/files/11192353902.pdf
- https://cdn.shopify.com/s/files/1/0441/1876/9816/files/82880767865.pdf
- https://cdn.shopify.com/s/files/1/0433/8502/8758/files/39776597769.pdf
- https://cdn.shopify.com/s/files/1/0431/1384/0793/files/zaletewalexurivepo.pdf
- https://cdn.shopify.com/s/files/1/0428/4357/0343/files/449703497.pdf
- https://cdn.shopify.com/s/files/1/0431/1236/6241/files/anthropology_dictionary.pdf
- https://cdn.shopify.com/s/files/1/0428/9105/1161/files/are_text_messages_legally_binding.pdf
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/importance_of_leadership_in_community_development.pdf
- https://cdn.shopify.com/s/files/1/0435/7554/1919/files/avast_activation_key.pdf
- https://cdn.shopify.com/s/files/1/0434/4627/2162/files/wakko_s_50_states_and_capitals_lyrics.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_off00005659.bin0da842398a183b45b880e66dcda9c79b2ab89deaf135ef7007d843124337c4ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5659 | 5256 bytes |
font_01_sfnt_off0000682a.bind222a18e18b804ac739cb145e648c9cb35a9de03cf0befb4413b97a8566e0dcc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x682A | 11096 bytes |
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