MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file was flagged as malicious due to a high number of embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure. The document body contains the text 'Brainstorming worksheet esl' and the URL 'https://ttraff.ru/pify?keyword=brainstorming+worksheet+esl', indicating a potential lure for users searching for educational materials. No scripts were extracted from this sample.
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=brainstorming+worksheet+esl
- http://files.fccwareham.org/uploads/1/3/2/7/132740860/4414195.pdf
- http://rorinako.theragirl.com/uploads/1/3/2/3/132302780/sukagotisopojup_nozuwovarejini_wofituv_dodolofa.pdf
- http://kiwuxem.missrodeokansas.org/uploads/1/3/1/4/131437436/6a3e37e9b79.pdf
- http://files.eliteconstructioncharleston.com/uploads/1/3/1/4/131438891/b96a90162a7456e.pdf
- https://cdn.shopify.com/s/files/1/0433/8837/1107/files/vituwilobubifefos.pdf
- https://cdn.shopify.com/s/files/1/0430/5915/1009/files/detimone.pdf
- https://cdn.shopify.com/s/files/1/0433/7542/7735/files/xuxoxi.pdf
- https://cdn.shopify.com/s/files/1/0432/1935/3757/files/kolemobexakorukuje.pdf
- https://cdn.shopify.com/s/files/1/0431/7937/6798/files/xikevikinukij.pdf
- https://cdn.shopify.com/s/files/1/0429/9833/3599/files/zip_code_to_lat_long.pdf
- https://cdn.shopify.com/s/files/1/0427/5778/3718/files/kisekanugijosuwefenosoxa.pdf
- https://cdn.shopify.com/s/files/1/0439/3048/4904/files/nukosegodumi.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_off00005b86.bin6aa710c0e64d74895b5c8772c711783bb9fc9fd286f94ddd1a6c0215712a4a83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B86 | 5304 bytes |
font_01_sfnt_off00006d73.bin41681c7a2843baf758980d71aba22452fb80ebfbf9b1ca023afae023f3d7c4a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D73 | 10428 bytes |
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