MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One of the embedded URLs, 'https://ttraff.ru/wix?keyword=diff+b%252Fw+chordates+and+non+chordates', is flagged as a known malicious redirector. The document's content, while appearing academic, serves as a lure to direct users to potentially harmful websites.
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/wix?keyword=diff+b%252Fw+chordates+and+non+chordates
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/87a178_bb9ca08811eb4c5e99d6778724d50667.pdf
- https://static.usrfiles.com/ugd/7f46b5_503cad58c91b4586b033ef225ab36f4e.pdf
- https://static.usrfiles.com/ugd/9e41f0_a08d664fd0d54b859922bbe5e1bee2cd.pdf
- https://static.usrfiles.com/ugd/79e5df_4775753c3f5444b88ee3d73cef9a824b.pdf
- https://static.usrfiles.com/ugd/b8c837_312d2b7503a846dc952064edeeabe65f.pdf
- https://static.usrfiles.com/ugd/b8c837_fd55ff76e2d7412887c5dc4db07dd133.pdf
- https://static.usrfiles.com/ugd/9cb927_1674887ddb37420dab78c83a1221d679.pdf
- https://static.usrfiles.com/ugd/8a419d_76c65aa659b64168b0ac08a96785677c.pdf
- https://cdn.shopify.com/s/files/1/0432/4986/0765/files/fobit.pdf
- https://cdn.shopify.com/s/files/1/0428/1407/9143/files/xujanedima.pdf
- https://cdn.shopify.com/s/files/1/0430/1930/5113/files/vipagal.pdf
- https://cdn.shopify.com/s/files/1/0440/8151/2613/files/lolugumaluxeb.pdf
- https://cdn.shopify.com/s/files/1/0430/0223/2983/files/kozosimazezagapanavuk.pdf
- https://static.usrfiles.com/ugd/b8c837_1047222140094212abc2e0fb59586faf.pdf
- https://static.usrfiles.com/ugd/02beb7_ad5ed59a3c8c4cb7b41d32c59dc4b3c1.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_off0000722b.binda2e6276929c01cdb241000d9f4ceb47caf6b529fce3fe9f0196474169cc54b8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x722B | 5344 bytes |
font_01_sfnt_off00008464.bin9e6fb407ba17637a10c1a92f3d076105d699496f756e519fde7f17bc5c383eb1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8464 | 9908 bytes |
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