MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a lure disguised as an educational worksheet answer key, directing users to a malicious URL. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient for a high-confidence assessment.
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.link/pify?keyword=exponents+and+scientific+notation+worksheet+answer+key
- https://cdn.shopify.com/s/files/1/0429/3656/5923/files/32160504094.pdf
- https://cdn.shopify.com/s/files/1/0437/1054/6070/files/learning_from_data_a_short_course.pdf
- https://cdn.shopify.com/s/files/1/0434/2402/2677/files/90925196280.pdf
- https://cdn.shopify.com/s/files/1/0464/7220/0342/files/neliga.pdf
- https://cdn.shopify.com/s/files/1/0430/0151/2090/files/dujubopu.pdf
- https://cdn.shopify.com/s/files/1/0438/8909/8907/files/lozomosazejamerotakado.pdf
- https://cdn.shopify.com/s/files/1/0432/6470/4665/files/rss_feeds_cnn.pdf
- https://cdn.shopify.com/s/files/1/0437/1080/8216/files/9555010418.pdf
- https://cdn.shopify.com/s/files/1/0429/5881/5398/files/weather_in_wausau_wi.pdf
- https://cdn.shopify.com/s/files/1/0428/2764/5084/files/cornbread_dressing_nutrition_information.pdf
- https://cdn.shopify.com/s/files/1/0444/6437/3927/files/wusanawuja.pdf
- https://cdn.shopify.com/s/files/1/0437/1690/3080/files/47965569203.pdf
- https://cdn.shopify.com/s/files/1/0430/3526/3138/files/8124521721.pdf
- https://cdn.shopify.com/s/files/1/0433/3935/0181/files/tonedonidirarupot.pdf
- https://cdn.shopify.com/s/files/1/0434/5351/3880/files/tilde_symbol_android_keyboard.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_off00007baa.bin03b624efa94d054d0cf105789427e06fa99f92e6df7bb5cfbf412a77f40f6de8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BAA | 5496 bytes |
font_01_sfnt_off00008e7c.bin53eabe99c8a801a958a9f6deca376beb8fecab6fb7453dd82aefef39dc17ba4c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E7C | 13660 bytes |
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