MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to an 'introduction paragraph worksheet'. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing a mass external PDF link farm. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.
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.cc/pify?keyword=writing+an+introduction+paragraph+worksheet
- http://files.trrope.com/uploads/1/3/2/7/132740435/1014737.pdf
- http://bejuluko.premieroftampabay.com/uploads/1/3/1/4/131456363/536c40b2.pdf
- http://files.jiniepku.com/uploads/1/3/1/4/131453967/4735930.pdf
- http://files.lingsgardenstore.com/uploads/1/3/2/7/132740234/rogivagakur.pdf
- https://cdn.shopify.com/s/files/1/0429/6392/7206/files/zekuv.pdf
- https://cdn.shopify.com/s/files/1/0434/0868/7269/files/fejufewamomimifewuwixuw.pdf
- https://cdn.shopify.com/s/files/1/0433/0458/3318/files/definition_of_compressional.pdf
- https://cdn.shopify.com/s/files/1/0440/2708/4965/files/vexodinasenarepudezawawe.pdf
- https://cdn.shopify.com/s/files/1/0434/5597/1492/files/70802210900.pdf
- https://cdn.shopify.com/s/files/1/0431/0922/0503/files/mavukaju.pdf
- https://cdn.shopify.com/s/files/1/0439/9228/5342/files/free_christmas_wallpaper_hd_for_android.pdf
- https://cdn.shopify.com/s/files/1/0427/4126/8647/files/zisuxaf.pdf
- https://cdn.shopify.com/s/files/1/0427/9848/1564/files/mabasega.pdf
- https://cdn.shopify.com/s/files/1/0435/4323/2661/files/21734810361.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_off00007190.binbce86177cfd49d586a9ce2eb99b52e5d58aa86c0c7906e51d02c86677cb08bcd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7190 | 5472 bytes |
font_01_sfnt_off00008437.bina4f9568705b17e858fc0f0d5fc8798d5e026d4ed75b7aabf75ccec8f7e15cad5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8437 | 10308 bytes |
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