MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure for a 'workbook pdf free download'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. The ML classifier strongly supports the malicious verdict.
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=new+cutting+edge+elementary+workbook+pdf+free+download
- http://files.maplerunfriends.com/uploads/1/3/2/7/132710630/kubaguzeziku_xuwemorefep.pdf
- http://files.corehealthbemidji.com/uploads/1/3/1/4/131437765/a9723165e6992d.pdf
- http://files.louisefutchertherapy.co.uk/uploads/1/3/1/3/131398547/1155303.pdf
- https://cdn.shopify.com/s/files/1/0432/5680/7586/files/18766801893.pdf
- https://cdn.shopify.com/s/files/1/0435/1423/2996/files/fesiponoxixaperibeto.pdf
- https://cdn.shopify.com/s/files/1/0427/8370/3206/files/fizapegowidew.pdf
- https://cdn.shopify.com/s/files/1/0430/5040/1943/files/xelabapi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
- https://cdn.shopify.com/s/files/1/0428/5287/6455/files/mavizusumef.pdf
- https://cdn.shopify.com/s/files/1/0430/7196/3296/files/565992157.pdf
- https://cdn.shopify.com/s/files/1/0432/4101/3412/files/rebetimepafuzosar.pdf
- https://cdn.shopify.com/s/files/1/0428/4363/5879/files/piwaronudimo.pdf
- https://cdn.shopify.com/s/files/1/0438/9571/8040/files/defutapuxeluwiso.pdf
- https://cdn.shopify.com/s/files/1/0434/0675/3948/files/disus.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/
- https://cdn.shopify.com/s/files/1/0430/504
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005602.binfc7d7e538fd76d08e4e148d496b0d37ecd7dc6deea59ad87762ecc47604902e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5602 | 5548 bytes |
font_01_sfnt_off000068db.bin8bd460ea8c2d1483588ec499867861cd71cda81190400d0af3aa63eeda4b8c17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68DB | 9092 bytes |
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