MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'protein synthesis steps pdf'. The PDF also contains a mass of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious IOC is the redirector URL.
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=protein+synthesis+steps+pdf
- http://files.jacksonandthepoolsharks.com/uploads/1/3/1/3/131398221/wesixukin.pdf
- http://files.centralbusinessdistrict.com/uploads/1/3/2/8/132814989/13cd3627f8.pdf
- http://vinade.moniestorm.com/uploads/1/3/1/3/131380213/parakirusu.pdf
- https://cdn.shopify.com/s/files/1/0437/1516/6357/files/10213151753.pdf
- https://cdn.shopify.com/s/files/1/0435/5008/1183/files/hard_reset_ipod.pdf
- https://cdn.shopify.com/s/files/1/0428/1021/2518/files/71565604917.pdf
- https://cdn.shopify.com/s/files/1/0439/3956/1630/files/quimica_inorganica_catherine_housecroft.pdf
- https://cdn.shopify.com/s/files/1/0432/5844/5979/files/xowuzo.pdf
- https://cdn.shopify.com/s/files/1/0434/3968/5799/files/suzakomipofuvib.pdf
- https://cdn.shopify.com/s/files/1/0433/8617/5651/files/kuximufuwur.pdf
- https://cdn.shopify.com/s/files/1/0431/3179/7668/files/pasenuxavatovekewuvizi.pdf
- https://cdn.shopify.com/s/files/1/0432/6028/0982/files/all_constitutional_amendments.pdf
- https://cdn.shopify.com/s/files/1/0428/1679/8883/files/28841058571.pdf
- https://cdn.shopify.com/s/files/1/0431/0958/0961/files/properties_of_bearing_materials.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_off0000b55b.bin91a1c65ebf379c41b61e910f734f0d57e6b5a2ff4cf18b59ceb910c0845ce24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB55B | 4988 bytes |
font_01_sfnt_off0000c652.bin13d34848518564dc2f2cae7db1d2cf2425377bcdfcc45f57d888a94a2ab37866 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC652 | 10452 bytes |
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