MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=aprendizajes+clave+preescolar+pdf+2018, which is likely used to distribute traffic or lead users to malicious content. The presence of numerous links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic through the redirector. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=aprendizajes+clave+preescolar+pdf+2018 In PDF document text
- http://files.allunaskin.com/uploads/1/3/2/6/132681992/vetudituno.pdfIn PDF document text
- http://files.ps305.com/uploads/1/3/1/4/131454355/dimezonus_runowa_mivonibun_tivez.pdfIn PDF document text
- http://dupepo.remedycentralcoast.com/uploads/1/3/2/8/132814930/sexeba.pdfIn PDF document text
- http://nirujimi.chiropractic-now.com/uploads/1/3/0/8/130874655/4be666370.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0438/5275/9200/files/58058489795.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4310/2613/files/dd_form_108.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4742/0057/files/29945039784.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5585/6281/files/alcohol_120_for_windows_10_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8210/4478/files/13366644436.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2325/4179/files/71668477869.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2908/5859/files/67195723610.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6761/3087/files/79605169803.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7620/6240/files/53488897419.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7041/3207/files/14885319988.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9708/7390/files/7755442510.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2930/7287/files/24625781436.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2256/5032/files/nelson_mandela_short_biography.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008285.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8285 | 5552 bytes |
SHA-256: c60de4b8123314267b17bc8013714118ebbc2d45fa508ef35efba278c49a3139 |
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font_01_sfnt_off00009576.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9576 | 10428 bytes |
SHA-256: f16ae452d5fc8353c6a29e0a301a3a53d0de2e9e49bc012a8c803b97c7ea687c |
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font_02_sfnt_off0000b790.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB790 | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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