MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous external links. The primary malicious URL identified is https://ttraff.cc/wix?keyword=organizadores+curriculares+primaria, which is likely used to redirect users to a phishing or malware-hosting site. No scripts were extracted, and the document body was heavily obfuscated.
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=organizadores+curriculares+primaria In PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/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/b8c837_2be55c7e8b444c1fa019757a913632e9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_8ffb51f4d6df4c81883c0a56039f58f7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_7e02755ea7f64cb2ba3cd4a7f15fa134.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3ceeb9_744a88bc93f446d3b58bd53e7336cddf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/3269/6216/files/58867018384.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/5789/7623/files/26468446817.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7006/2753/files/81155410937.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8062/9913/files/cutnell_physics_10e.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8714/2819/files/vufasijofu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2808/5911/files/comma_worksheet_for_2nd_grade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0899/0116/files/neoplasia_maligna_de_tiroides.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_2ac059802fc34f08872ac0a45fc587c4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_b1ffb517261f4ccfa867406991f5cb14.pdfIn PDF document text
- https://static.usrfiles.com/ugd/63d3ad_8397f1320d284dc8b478c50227ec5416.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_off00009940.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9940 | 1696 bytes |
SHA-256: a63dc7203ceba2031beaf1d50b83973ffdd0483474384fa5780efc3deacec6ca |
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font_01_sfnt_off0000a16a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA16A | 5472 bytes |
SHA-256: 6cd6927ce9e76481d6f79f0f9ba495b2f50756bf41b52f2f191dd5d5dfd6358f |
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font_02_sfnt_off0000b3ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3EE | 11200 bytes |
SHA-256: 2abfdf4d0bb24e032420ce698085bb6e7c152a519b3db204e568eaaf994b42fb |
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