MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a prominent link to 'https://ttraff.cc/wix?keyword=biorefinery+book+pdf', which is flagged as a malicious redirector. The document body, though partially corrupted, also contains this URL and appears to be a lure for a 'Biorefinery book pdf'. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicates 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/wix?keyword=biorefinery+book+pdf
- https://cdn.shopify.com/s/files/1/0449/9714/8836/files/17_key_kalimba_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0433/4331/5102/files/79368927476.pdf
- https://cdn.shopify.com/s/files/1/0433/7552/6042/files/free_printable_worksheets_for_1st_grade.pdf
- https://cdn.shopify.com/s/files/1/0430/1537/2953/files/50447267116.pdf
- https://cdn.shopify.com/s/files/1/0437/7791/7085/files/mitsubishi_tractor_manual.pdf
- https://static.usrfiles.com/ugd/217d68_aed7c2697c924d3480dbbb2990f6aae7.pdf
- https://static.usrfiles.com/ugd/b8c837_d6e82f2d796d4f2f9dab1a9d9eb3a729.pdf
- https://static.usrfiles.com/ugd/4bb894_c010c527da8841299dca3236861b6df8.pdf
- https://static.usrfiles.com/ugd/4b7290_7ab48748fde34182936ba85f87b7047f.pdf
- https://static.usrfiles.com/ugd/95089d_473c6dddf52e4939b08ebecab85867f5.pdf
- https://static.usrfiles.com/ugd/b8c837_76d2d8ee02c84bb3b86aaea4000516f3.pdf
- https://static.usrfiles.com/ugd/4dd980_5de7ce065f2344a18b67279432781514.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_off000091cb.bin42f1a927ec4e8953922612d15e9569396a54c1f597db3ba247d791a03b7081a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91CB | 4968 bytes |
font_01_sfnt_off0000a2d0.bin971efdb9ca1f8dd66357ee8362d8697f26bda24e464aac70dbd39b08b42a7cd5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA2D0 | 10324 bytes |
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