MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded URLs that point to a known malicious redirector, disguised as educational content. The ML classifier strongly indicates maliciousness, and the presence of multiple external links suggests a link farm or phishing attempt. No scripts were extracted, but the overall structure and linked content indicate a lure to a malicious site.
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.cc/wix?keyword=ejercicios+matematicas+6+primaria In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/3e87bf_07f44ca4d99e4d8a9340782a1a5c8e2e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_2d89d6439cac4a22ace7d31827e05513.pdfIn PDF document text
- https://static.usrfiles.com/ugd/1e4819_2ab847803dfc4f129f7318cad99e09aa.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b88e3d_33f4a868c8ef421aba25a27f5826595e.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4953/4111/files/brother_mfc-_l2700dw_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/3737/1040/files/reasonable_accommodation_form_apartment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7785/1553/files/fca_suayed_unam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9616/0921/files/41791854176.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5331/7272/files/bozepofoxul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1188/1634/files/evento_cerebrovascular_isquemico_y_hemorragico.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0459/7311/0951/files/dakojubonug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5788/0996/files/welodepozukuni.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006007.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6007 | 6440 bytes |
SHA-256: a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c |
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font_01_sfnt_off00006ffb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FFB | 5236 bytes |
SHA-256: 1fc4c4eaf1927b50d246e0bfbfa909be6b8aaf2df171aa4ccc9fd513b2dea9f3 |
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font_02_sfnt_off000081b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x81B1 | 11136 bytes |
SHA-256: d7b3ec938f63ddba26a3fb52484b5ed6586114d98f3a7740b633a30d7f0b1502 |
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font_03_sfnt_off0000a631.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA631 | 16328 bytes |
SHA-256: 085576db18bb0fc782250241abecc7e2760275121a9b893a05600fa9329c440f |
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