MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO link farming or to obscure malicious destinations. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=subject+filing+definition'. The document body, though heavily obfuscated, contains text related to 'subject filing definition', suggesting a lure to trick users into clicking the malicious links. The ML classifier also strongly indicated maliciousness.
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=subject+filing+definition
- http://nitizili.cottonginmuseum.com/uploads/1/3/1/8/131856917/1647427.pdf
- http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdf
- http://pogevak.noelanipta.org/uploads/1/3/0/8/130874655/9431467.pdf
- http://files.morganmanella.com/uploads/1/3/2/6/132682295/8299804.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/6662/1094/files/44025615805.pdf
- https://cdn.shopify.com/s/files/1/0431/4556/0226/files/2183696605.pdf
- https://cdn.shopify.com/s/files/1/0436/2734/8121/files/suburban_rv_water_heater_parts_diagram.pdf
- https://cdn.shopify.com/s/files/1/0440/1663/1973/files/xbox_one_controller_windows_7_driver.pdf
- https://cdn.shopify.com/s/files/1/0455/4752/0165/files/benim_hocam_yks_matematik_ders_notlar.pdf
- https://cdn.shopify.com/s/files/1/0433/8581/5205/files/49878308119.pdf
- https://cdn.shopify.com/s/files/1/0440/1247/0422/files/liposodomomawalomib.pdf
- https://cdn.shopify.com/s/files/1/0432/3606/5438/files/renesobesimavop.pdf
- https://cdn.shopify.com/s/files/1/0448/1217/3463/files/analogical_reasoning.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000758a.bin3c12367987dff7b0bc25b9572f3bb0e4f66b221474aab79fa3c7c2fc04301f04 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x758A | 5024 bytes |
font_01_sfnt_off000086b2.bin88804970f86e9cb6ad46af6d5cf2e50e2a68930f765f267766a2f28465ee83d6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x86B2 | 10104 bytes |
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