MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many pointing to PDF files hosted on various domains. One of these links, https://ttraff.ru/pify?keyword=darkening+of+tristram+2019+guide, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself is largely unreadable binary data, but the presence of the link farm and the malicious redirector suggest a delivery mechanism for 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.ru/pify?keyword=darkening+of+tristram+2019+guide
- http://files.futfemuniversal.com/uploads/1/3/2/8/132814272/faduxubikitorazurof.pdf
- http://files.jorpasimart.com/uploads/1/3/1/8/131856326/90d0772b3.pdf
- http://files.sarahdionna.com/uploads/1/3/0/7/130776655/xafunelesarutid.pdf
- https://cdn.shopify.com/s/files/1/0438/4853/2128/files/xesajelupowureze.pdf
- https://cdn.shopify.com/s/files/1/0431/2891/4074/files/rewapetozokomulez.pdf
- https://cdn.shopify.com/s/files/1/0436/7033/9737/files/72955822548.pdf
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/34038306428.pdf
- https://cdn.shopify.com/s/files/1/0438/3725/9936/files/32787513029.pdf
- https://cdn.shopify.com/s/files/1/0433/8024/4643/files/17295194011.pdf
- https://cdn.shopify.com/s/files/1/0433/5812/6245/files/84722806325.pdf
- https://cdn.shopify.com/s/files/1/0433/6667/8696/files/uk_address_in_us_format.pdf
- https://cdn.shopify.com/s/files/1/0429/6169/8969/files/running_total_java.pdf
- https://cdn.shopify.com/s/files/1/0431/6191/1458/files/5483613414.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_off0000608a.binb75dbe009b95b800cebc2d7e8f0e90a29531d827741038cd9c557b750ff819a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x608A | 5740 bytes |
font_01_sfnt_off0000740c.binc8aecdb237bca2bc44edcf0e8d2569b205da766ba3281c8742f07ca49b032e14 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x740C | 9952 bytes |
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