MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, with one identified as a known malicious redirector (https://ttraff.ru/pify?keyword=mastering+chemistry+solutions). The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on various domains, suggesting a link farm or redirection strategy to distribute 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.ru/pify?keyword=mastering+chemistry+solutions
- http://files.pilgrimlutheranfreedom.com/uploads/1/3/0/7/130775735/6988908.pdf
- http://files.shotojuku.co.uk/uploads/1/3/0/9/130969974/9530200.pdf
- http://files.atouchofwanderlustphotography.com/uploads/1/3/0/7/130776131/159804.pdf
- https://cdn.shopify.com/s/files/1/0440/8374/0822/files/sumavawejogulusupuxox.pdf
- https://cdn.shopify.com/s/files/1/0433/7926/1590/files/mifuledapogajurifojolodus.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxajuvorupi.pdf
- https://cdn.shopify.com/s/files/1/0437/1605/1112/files/45144615777.pdf
- https://cdn.shopify.com/s/files/1/0433/9433/4869/files/14676590144.pdf
- https://cdn.shopify.com/s/files/1/0433/8024/4643/files/96170998232.pdf
- https://cdn.shopify.com/s/files/1/0435/6240/1947/files/getitilesuma.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdf
- https://cdn.shopify.com/s/files/1/0433/5943/6951/files/92114994003.pdf
- https://cdn.shopify.com/s/files/1/0433/8201/4108/files/41108553636.pdf
- https://cdn.shopify.com/s/files/1/0432/5585/7315/files/fowuxiduji.pdf
- https://cdn.shopify.com/s/files/1/0429/1588/9305/files/20292783235.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000044e9.bin82f1248061edde9a3032384e1fd7b4ed1e02792b2a10a601810f8e59bcc5f2b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44E9 | 5204 bytes |
font_01_sfnt_off0000566c.binaa175e99164c1224e1e7218f8608da9a8643714debc339670b7d015ead6058e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x566C | 8604 bytes |
font_02_sfnt_off000073c2.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73C2 | 4324 bytes |
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