MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. One of the primary links, 'https://ttraff.ru/wix?keyword=medida+de+capacidad+para+aridos', is flagged as a malicious redirector. The document body contains garbled text and references to wkhtmltopdf, suggesting it may have been generated programmatically to host these links.
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/wix?keyword=medida+de+capacidad+para+aridos In 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/1/0430/6803/1143/files/nesizeluxewezevijojaxuw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5388/2273/files/90399620904.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9529/4105/files/verset_biblique_d_encouragement.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2338/2166/files/autobiographical_elements_in_the_novel_mill_on_the_floss.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_1068a86272d44ee79c5c33a8e5e7a9ab.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_e285629aa57b4869b8e57c127a89b030.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_f5dc59ba1eb84f729cf8d39e0db1e8c6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_bdc34efc87aa42328f72b61516303866.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_271090167dc04bebafb0337794bf4f64.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_66738736f2ad4c5b98e62a0b1133a496.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0511f5_33b8c1ccb9fd4650a0524ab3809bc397.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d7ba0f_406f7e2f8cf64ddabfdbe6a4d6f10f14.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_607cf5f478734dbaa885c6cc1aadfda5.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
- 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_off00005cc3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CC3 | 4644 bytes |
SHA-256: fd6f2517fff4ff27dc7459021f9f9dfdabcac3f291718b14fe5263e524e5d011 |
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font_01_sfnt_off00006c8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C8B | 11396 bytes |
SHA-256: f19b2d82a311f3d778a9d5e152e6cd95c2c66cc17da9158c557671e9fceb5e0b |
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font_02_sfnt_off000091fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91FB | 16164 bytes |
SHA-256: 967d89e51290aceb8fea09c2f9e0c707663cecf1a9b826b2128538f448fdbc28 |
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font_03_sfnt_off0000a714.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA714 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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