MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically to a URL related to 'spinal cord injury rehabilitation protocol pdf'. The document body, though heavily obfuscated, contains the same URL, indicating a lure to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The ML classifier strongly supports the malicious nature of this 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/pify?keyword=spinal+cord+injury+rehabilitation+protocol+pdf
- http://files.thewasting.com/uploads/1/3/1/0/131070539/judosuwumudoza.pdf
- http://files.treetogrow.com/uploads/1/3/0/7/130775970/495ded3b3c.pdf
- http://files.sanctuaryandresistance.org/uploads/1/3/1/3/131398515/vofuwivow-wazojo-sozigikalup-rufaluvevav.pdf
- https://cdn.shopify.com/s/files/1/0432/6490/1270/files/1138316492.pdf
- https://cdn.shopify.com/s/files/1/0428/3197/0460/files/golurulogetixo.pdf
- https://cdn.shopify.com/s/files/1/0432/1204/6491/files/human_fetal_development.pdf
- https://cdn.shopify.com/s/files/1/0427/8901/1612/files/95066442568.pdf
- https://cdn.shopify.com/s/files/1/0431/3628/6877/files/69378437192.pdf
- https://cdn.shopify.com/s/files/1/0438/1887/7090/files/11886538798.pdf
- https://cdn.shopify.com/s/files/1/0440/8115/2152/files/html_skeleton_code.pdf
- https://cdn.shopify.com/s/files/1/0430/2694/0067/files/skyscale_lost_guide.pdf
- https://cdn.shopify.com/s/files/1/0429/1729/8329/files/barefoot_in_the_park_full_script_free.pdf
- https://cdn.shopify.com/s/files/1/0438/0711/3373/files/adobe_reader_convert_to_word_free_download.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_off0000821c.bine1e0157415516140b3649faf30c7b6d4f36473b306357a7698e18288834d9637 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x821C | 5484 bytes |
font_01_sfnt_off000094c3.bin1bad6cbfe3a3de92e77da69c86539ccb62633ef34ab5f2e4a74d698eabee34e7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94C3 | 10300 bytes |
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