MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple links to redirector infrastructure, specifically identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Fresenius 4008s dialysis machine pdf'. The primary malicious IOC is the redirector URL, which is likely used to host or deliver a secondary payload. The ML classifier strongly indicated maliciousness.
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=fresenius+4008s+dialysis+machine+pdf In PDF document text
- http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.pdfIn PDF document text
- http://files.washnword.com/uploads/1/3/0/9/130969546/8253e2e153.pdfIn PDF document text
- http://files.gingersnapsapparel.com/uploads/1/3/1/4/131410234/wobevaruwawirifazus.pdfIn PDF document text
- http://files.maysplumbingworks.com/uploads/1/3/0/7/130776755/5963642.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://jawajadepoj.files.wordpress.com/2020/06/90789164252.pdfIn PDF document text
- https://netuvujon.files.wordpress.com/2020/07/26186056157.pdfIn PDF document text
- https://lasofibile.files.wordpress.com/2020/07/xufamikolu.pdfIn PDF document text
- https://neguraxopon.files.wordpress.com/2020/06/62873863619.pdfIn PDF document text
- https://jevitexak.files.wordpress.com/2020/07/kopasijaxi.pdfIn PDF document text
- https://jodadisak.files.wordpress.com/2020/06/rivibovidawevivelusono.pdfIn PDF document text
- https://xividitusaje.files.wordpress.com/2020/07/xovetegetuxorilaw.pdfIn PDF document text
- https://zukijimalu795932751.files.wordpress.com/2020/07/bafukerilisuborewifetiro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2920/8986/files/divas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9754/7157/files/vajiwuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1244/7652/files/62011519986.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6731/0231/files/wukelinujudid.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8751/8104/files/91914810278.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3526/3138/files/40903655321.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fipewedagasupena.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5819/1768/files/rubop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3562/2552/files/10633622393.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_off0000723d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x723D | 5568 bytes |
SHA-256: 3d91de0ce64710d89b947500e584a4fd36461145a7abb048b1558754021ff1b1 |
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font_01_sfnt_off00008508.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8508 | 10588 bytes |
SHA-256: fcda9cfee3f68115b26cc78030c0ca78503c656566fa2d05e6d7ca63ffa6157b |
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