MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple critical heuristics for linking to malicious redirector infrastructure and for being part of a link farm. The document body contains obfuscated text and embedded URLs, including a suspicious link to 'ttraff.ru' which is known for malicious redirection. The primary purpose appears to be SEO manipulation or redirecting users to malicious content.
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=anexos+del+aparato+digestivo+pdf In PDF document text
- http://files.livingsoulplete.com/uploads/1/3/0/7/130776462/adf0ff846c4.pdfIn PDF document text
- http://files.ukofc7464.com/uploads/1/3/0/7/130776828/5493087.pdfIn PDF document text
- http://pezexale.gfmenvironmental.com/uploads/1/3/0/7/130775129/wuxugu-lekezenisedi-dowaratabawid-tevapevefejebuf.pdfIn PDF document text
- http://files.adnpkids-researchfoundation.org/uploads/1/3/1/4/131453724/pewumevevupibem_babotavilosufib.pdfIn PDF document text
- http://files.thecryptocorp.com/uploads/1/3/1/8/131871740/1119637.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6212/4959/files/descriptive_inorganic_chemistry_3rd_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9755/4084/files/96533092419.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3019/8937/files/yogananda_autobiography_of_a_yogi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suton.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9793/9361/files/kiwalitekefadanudejazomil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6470/4665/files/pamizigaguxigo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8561/7570/files/warcraft_3_frozen_throne_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3178/1791/files/29882403899.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1124/3164/files/natajurarizefade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/zodatixokebux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2669/2771/files/ripexametidinijonus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5666/7541/files/biochemistry_lehninger_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/7186/8821/files/aristotle_politics_book_3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2313/7957/files/allegro_free_physical_viewer_tutorial.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b7e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7E2 | 5328 bytes |
SHA-256: b28f4f3d47f7aba68a2c6290809815a2e1e79a4391bc51d5b62ba4ac08d44662 |
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font_01_sfnt_off0000ca1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA1E | 10748 bytes |
SHA-256: fe17e989c9076998c17402c6a5880383f160ebdffdd290b0d13e8446f4f2fcfc |
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