MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to an SEO redirector, specifically 'https://ttraff.ru/pify?keyword=retinopatia+diabetica+pdf+2020', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Retinopatia diabetica pdf 2020'. The presence of multiple external PDF links, some pointing to benign Shopify URLs and others to unknown hosts, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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=retinopatia+diabetica+pdf+2020 In PDF document text
- http://files.countyclassdestroyersassociation.org/uploads/1/3/2/7/132712661/cb0e0be9.pdfIn PDF document text
- http://files.hbint.org/uploads/1/3/1/4/131406717/9639792.pdfIn PDF document text
- http://files.neverwantednothingmore.com/uploads/1/3/2/7/132741535/b50d01ba2e5ccfc.pdfIn PDF document text
- http://files.mrwillpe.com/uploads/1/3/1/4/131483361/kadosiwowuvixe_wutenizinojupa_fatesupijiji.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/1/0434/8634/7414/files/wakuku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8568/5153/files/31033577164.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6174/6595/files/patas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9018/2297/files/89199487486.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8206/3777/files/76838977042.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3015/0309/files/zavuwatevuv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6281/3084/files/50323959344.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9103/2216/files/60929542741.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0187/1512/files/56356959350.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1531/5351/files/puvozipunuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4329/8207/files/bujema.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F83 | 5052 bytes |
SHA-256: 8a42016eb8e35adc9bf42616baad770d21f269fb370b7e531473bf31d7cb5df9 |
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font_01_sfnt_off000080bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80BD | 10444 bytes |
SHA-256: c93b83a98bd6089738ef78ae1b2b725d8a43c5f884872fb2ddeb9dbecf8c28a0 |
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font_02_sfnt_off0000a465.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA465 | 16080 bytes |
SHA-256: c8e3b24c8ce9ed504125d6e420099360352dce4a210a2ea2f38641ed3aaafa23 |
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