MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/wix?keyword=ecuaciones+diferenciales+lineales+de+primer+orden'. The document body, though heavily obfuscated, contains this URL and references to academic topics, suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or traffic generation to the malicious redirector.
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.com/wix?keyword=ecuaciones+diferenciales+lineales+de+primer+orden 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/1/0435/1338/1028/files/57567726272.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3631/9639/files/37236583081.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8873/1543/files/nariz_de_fumaa_do_touro_gif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4101/2382/files/98836799165.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7970/3451/files/bewapugepezubanipipopilu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3508/1374/files/antecedentes_internacionales_de_los_derechos_humanos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3602/4742/files/tuseritanabupesomis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1251/4201/files/57327311357.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3592/6434/files/59976543481.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1230/8637/files/84534897800.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8935/4142/files/porujukitewexetutoka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4248/5910/files/ketogenic_diet_recipes_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1510/9794/files/barcos_que_vuelan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7124/2391/files/33173153046.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_off00008c5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C5F | 5060 bytes |
SHA-256: 5ac4abab4ef8d4592239bddb4a860130e610350a911e064f32554cfc9f5c3569 |
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font_01_sfnt_off00009d6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D6E | 15188 bytes |
SHA-256: c8cd3e182e6ce57183e087cc44c97f161b679622ba6397c7231176b29f56f479 |
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font_02_sfnt_off0000cbc9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBC9 | 16112 bytes |
SHA-256: 116e1aefc1bdc9fdbdc8bc4ca32ed8fc2a9096b6ae60b76e258fcc2d5524df3d |
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font_03_sfnt_off0000e09a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE09A | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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