MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a lure related to reducing file size, but the primary malicious activity is indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The sample redirects to a malicious URL and hosts a large number of external PDF links, suggesting a campaign to manipulate search results or distribute further malicious content. The ML_NYX_PDF_MALICIOUS heuristic strongly supports the malicious classification.
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=reduce+pdf+file+size+macbook
- http://files.adventuresav.com/uploads/1/3/1/8/131856409/6084706.pdf
- http://files.buy-ephedrine-uk.com/uploads/1/3/1/4/131438113/833393.pdf
- http://files.proseandcommas.org/uploads/1/3/1/0/131071082/6343639.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
- https://cdn.shopify.com/s/files/1/0429/1241/5907/files/zirelikigubulo.pdf
- https://cdn.shopify.com/s/files/1/0433/7228/2008/files/concept_of_marketing_information_system.pdf
- https://cdn.shopify.com/s/files/1/0433/9580/9431/files/punemopegugisumeveve.pdf
- https://cdn.shopify.com/s/files/1/0427/7701/8524/files/87369234032.pdf
- https://cdn.shopify.com/s/files/1/0432/6057/5912/files/begakosavawepogekazev.pdf
- https://cdn.shopify.com/s/files/1/0433/7015/2088/files/xudesibomitokofo.pdf
- https://cdn.shopify.com/s/files/1/0440/7328/7830/files/58885079358.pdf
- https://cdn.shopify.com/s/files/1/0447/7802/9213/files/afr_2020.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/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f65.binaaa60f7778d3046cb674e0488dcd196e309e3875acb787c1851816d7b2729b74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F65 | 5164 bytes |
font_01_sfnt_off000070fe.bin5cc0daee50dd3e13106979f8f899684bed3b6a6d162b38e52592d2563c78fe0d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70FE | 10784 bytes |
font_02_sfnt_off0000959d.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x959D | 4324 bytes |
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