MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identified a PDF link farm, with many links pointing to Shopify domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern appears to be SEO poisoning or a link farm designed to drive traffic to malicious sites, exemplified by the URL https://ttraff.ru/pify?keyword=ielts+speaking+topics+pdf+2020.
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=ielts+speaking+topics+pdf+2020
- http://files.esulix.com/uploads/1/3/1/3/131378918/bamasejo-jedosawe-rorusogof-sofaxejipajuni.pdf
- http://files.bensonmarshall.com/uploads/1/3/1/4/131453132/5737337.pdf
- http://files.wvangler.com/uploads/1/3/0/9/130969699/topaluzigesowovedav.pdf
- http://files.drsherasackey.com/uploads/1/3/0/9/130969761/wikejojulow_xazadukalife_diwiziru.pdf
- https://cdn.shopify.com/s/files/1/0431/6640/0663/files/20628949555.pdf
- https://cdn.shopify.com/s/files/1/0431/3110/9538/files/pezivowofenedevifa.pdf
- https://cdn.shopify.com/s/files/1/0431/8344/0036/files/munoxujujad.pdf
- https://cdn.shopify.com/s/files/1/0436/3019/8937/files/68410921400.pdf
- https://cdn.shopify.com/s/files/1/0435/0833/4744/files/bevoroleloxuki.pdf
- https://cdn.shopify.com/s/files/1/0430/4008/0021/files/21853366820.pdf
- https://cdn.shopify.com/s/files/1/0431/8239/1451/files/fevivubopuwep.pdf
- https://cdn.shopify.com/s/files/1/0437/2286/6842/files/hip_abductor_exercises.pdf
- https://cdn.shopify.com/s/files/1/0436/1306/1277/files/munetaduvaronakuzamefexo.pdf
- https://cdn.shopify.com/s/files/1/0428/9639/2348/files/74246851045.pdf
- https://cdn.shopify.com/s/files/1/0439/7318/1598/files/xalixafaxagex.pdf
- https://cdn.shopify.com/s/files/1/0432/8564/3419/files/42900775490.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_off0000bf94.bin040682059f7edd61e70a24d1f6035afe2c315c09aa38b78a92f9e01bc4e96596 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF94 | 5500 bytes |
font_01_sfnt_off0000d25d.binb80cad5fb8e84f85d724705a29df30cb06f078782e62d82a2c3cb78b44dd11a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD25D | 9936 bytes |
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