MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document contains a mass of external links, many hosted on Shopify, designed to appear as legitimate resources. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.com/wix?keyword=precalculus+textbook+6th+edition+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious content under the guise of providing a textbook PDF.
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.com/wix?keyword=precalculus+textbook+6th+edition+pdf
- https://cdn.shopify.com/s/files/1/0437/6218/8449/files/able2extract_converter_mac.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/83887442867.pdf
- https://cdn.shopify.com/s/files/1/0432/8233/3856/files/jaxep.pdf
- https://cdn.shopify.com/s/files/1/0428/7440/5023/files/curriculum_guide_in_mapeh_7-_10.pdf
- https://cdn.shopify.com/s/files/1/0430/0842/6147/files/informed_consent_medical_template.pdf
- https://cdn.shopify.com/s/files/1/0434/0465/6790/files/nutorekotodab.pdf
- https://cdn.shopify.com/s/files/1/0429/6012/6118/files/construction_expenses_excel_template.pdf
- https://cdn.shopify.com/s/files/1/0433/7015/2088/files/31429479664.pdf
- https://cdn.shopify.com/s/files/1/0432/2433/4498/files/58028868295.pdf
- https://cdn.shopify.com/s/files/1/0428/9570/4227/files/motoxoserupuvirasamalan.pdf
- https://cdn.shopify.com/s/files/1/0434/0593/4759/files/lowery_organ_manuals.pdf
- https://cdn.shopify.com/s/files/1/0433/4636/2527/files/lerujezajetusevixiv.pdf
- https://cdn.shopify.com/s/files/1/0429/6749/8911/files/31983840937.pdf
- https://static.usrfiles.com/ugd/3ab5ed_7d3ffa8d27834b7fa0da2551dbb1889f.pdf
- https://static.usrfiles.com/ugd/9edd50_51348662f2c448fc81f868c8d1e66ed3.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_off000051a1.bin956cf1110edc5d6abec7cafd00bb039c4cb43242d625346e5dcf7c0d3f09e178 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x51A1 | 5668 bytes |
font_01_sfnt_off000064da.bin5bd36965113388f6eae0029701594626098d4c7be52726c4de56d401b0f386f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64DA | 10252 bytes |
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