MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains embedded links, one of which points to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'C diff treatment guidelines 2018' and the URL, suggesting a lure to a malicious site disguised as a relevant document. The presence of numerous external PDF links further indicates a link farm or redirection strategy.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=c+diff+treatment+guidelines+2018
- http://files.monarchaccountinggroup.com/uploads/1/3/1/6/131636825/2906a68865.pdf
- http://files.kansascityamprepair.com/uploads/1/3/0/7/130775434/817abde80f29b.pdf
- http://files.noestansolos.org/uploads/1/3/2/8/132814900/jomizojiziporilisari.pdf
- https://cdn.shopify.com/s/files/1/0428/9685/1111/files/pisutaxi.pdf
- https://cdn.shopify.com/s/files/1/0440/2541/3782/files/38594105331.pdf
- https://cdn.shopify.com/s/files/1/0436/7735/2089/files/67545217742.pdf
- https://cdn.shopify.com/s/files/1/0434/3234/5765/files/12415786976.pdf
- https://cdn.shopify.com/s/files/1/0434/4040/6684/files/19604575999.pdf
- https://cdn.shopify.com/s/files/1/0429/6327/1833/files/14239284414.pdf
- https://cdn.shopify.com/s/files/1/0437/5589/6983/files/mifupevigukufupetefudos.pdf
- https://cdn.shopify.com/s/files/1/0432/7623/9014/files/54755410713.pdf
- https://cdn.shopify.com/s/files/1/0427/5752/1574/files/lung_arteriovenous_malformation_imaging.pdf
- https://cdn.shopify.com/s/files/1/0434/3260/7900/files/23307922199.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
- https://cdn.shopify.com/s/files/1/0431/7832/8221/files/nonafururugirafapu.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00015e29.bina11b306f8474097a70882d0a4b43916e1c7aec18238166d0308ace74f5a1e406 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15E29 | 5652 bytes |
font_01_sfnt_off00017143.bin6a2b00d586b807fd9bab11f3873f6173e20b3bc7b89aa2934489377f12507995 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17143 | 16108 bytes |
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