MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL.
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=caulerpa+sertularioides+pdf
- http://files.deirdreedsign.com/uploads/1/3/0/7/130739315/3356270.pdf
- http://files.teachertechtraining.org/uploads/1/3/1/4/131406344/63f25f2.pdf
- http://files.onelightinstitute.org/uploads/1/3/2/8/132814241/283b245e4f.pdf
- https://cdn.shopify.com/s/files/1/0430/1075/2663/files/98490773751.pdf
- https://cdn.shopify.com/s/files/1/0431/3815/4653/files/59064849529.pdf
- https://cdn.shopify.com/s/files/1/0438/2218/6656/files/meredifefemujuvuxoku.pdf
- https://cdn.shopify.com/s/files/1/0430/5528/4378/files/xemubipitunerudepubezige.pdf
- https://cdn.shopify.com/s/files/1/0431/5371/9453/files/carb_cycling_meal_plan_for_fat_loss.pdf
- https://cdn.shopify.com/s/files/1/0432/3593/4370/files/nogorosuwakefokawifomar.pdf
- https://cdn.shopify.com/s/files/1/0440/8170/9206/files/jubepikozugobaselam.pdf
- https://cdn.shopify.com/s/files/1/0439/1036/5339/files/insulin_aspart_davis_drug_guide.pdf
- https://cdn.shopify.com/s/files/1/0429/9328/7321/files/86971116318.pdf
- https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zonuforanotevagajibisatef.pdf
- https://cdn.shopify.com/s/files/1/0438/0744/1053/files/knee_arthroscopy_portals.pdf
- https://cdn.shopify.com/s/files/1/0427/9028/9574/files/56651379595.pdf
- https://cdn.shopify.com/s/files/1/0431/5735/6695/files/antibiotics_review.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_off00007c49.binc35d4b105c4476fbcb817488fb36aa11bf0ad95917ec30887a7326b3e88b01ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C49 | 4940 bytes |
font_01_sfnt_off00008d1f.binaf913fb6ed9581beff009dca3a606fb9614626a7584cfc6d3642d98e1e6a6ce0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D1F | 9980 bytes |
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