MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body text, though heavily obfuscated, contains URLs that are likely part of a link farm designed to lure users to malicious sites. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is used for malicious redirection.
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=barrera+hematoencefalica+pdf+unam
- http://jubud.craftofscientificpresentations.com/uploads/1/3/1/0/131069934/kulekota.pdf
- http://files.ccaradio.org/uploads/1/3/2/6/132696117/4187558.pdf
- http://files.cardiffmetcricket.com/uploads/1/3/1/8/131871642/856f688a3644.pdf
- http://files.rweirworks.com/uploads/1/3/1/3/131398374/54d60b.pdf
- https://cdn.shopify.com/s/files/1/0432/5307/2022/files/nivatenuj.pdf
- https://cdn.shopify.com/s/files/1/0428/8295/7478/files/josejiwamar.pdf
- https://cdn.shopify.com/s/files/1/0433/5904/3749/files/99570088105.pdf
- https://cdn.shopify.com/s/files/1/0436/2089/2834/files/spheres_in_minecraft.pdf
- https://cdn.shopify.com/s/files/1/0435/1174/2628/files/90437809266.pdf
- https://cdn.shopify.com/s/files/1/0435/9330/2178/files/free_mp3_mobiles.pdf
- https://cdn.shopify.com/s/files/1/0430/9018/2304/files/95019577247.pdf
- https://cdn.shopify.com/s/files/1/0438/2638/0960/files/32348764748.pdf
- https://cdn.shopify.com/s/files/1/0440/2675/7270/files/zesubiwemunififasovuvo.pdf
- https://cdn.shopify.com/s/files/1/0434/8208/7588/files/26509234076.pdf
- https://cdn.shopify.com/s/files/1/0432/5949/4555/files/6762039810.pdf
- https://cdn.shopify.com/s/files/1/0427/4972/2790/files/rudugilojonow.pdf
- https://cdn.shopify.com/s/files/1/0429/2221/3542/files/somuwesagawuxemewupiro.pdf
- https://cdn.shopify.com/s/files/1/0440/2964/0854/files/watch_american_reunion_online.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_off000073ea.bin03532c6434bd2e47cee1b1de9a78ed549a63c7e0e67995e8f2fd67b75a36abe1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73EA | 5264 bytes |
font_01_sfnt_off000085a8.bin8f18f2735378e59fcd64474e7e9729befeafbeb63c700f23a3f42decd36cd1bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85A8 | 11204 bytes |
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