MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a redirector, 'https://ttraff.link/wix?keyword=bacteriologia+medica+pdf', which is flagged as malicious. The document body and embedded links suggest a lure to download further content, likely malicious. The ML classifier strongly indicates maliciousness, and the presence of numerous PDF links points to a link farm strategy.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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.link/wix?keyword=bacteriologia+medica+pdf In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://static.usrfiles.com/ugd/564d2e_b45ca4a9bbc64749a5d9a9ecc0f39fe9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ce165cd67ae64a659f15c55cebf987d1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/61b8bf_0a49e7db4c9f412cbb094a8a762b20da.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_c4ba4d94663945188c53ab2d047448fd.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9058/3464/files/1690165338.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0084/5720/files/70533840920.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4629/5959/files/89_as_a_fraction.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0e6328_fc2d16a4ee984d3d9ee0c287fe7bd65e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/1cc7e8_b83bc33002e54ae0b318da7c8b601486.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ce4b7c_3e41210bc07d47268e0efe38d5029b57.pdfIn PDF document text
- https://static.usrfiles.com/ugd/868f76_f5ac264137574156ae03ee7893879234.pdfIn PDF document text
- https://static.usrfiles.com/ugd/72216b_84dbd6bba0d74ef6b5081b749cf052a0.pdfIn PDF document text
- https://static.usrfiles.com/ugd/99a8f2_4ee09a4454544a70814dda68f158ec71.pdfIn PDF document text
- https://static.usrfiles.com/ugd/735424_5ac38b7c79d340a9940d4516a0bf9b34.pdfIn PDF document text
- https://static.usrfiles.com/ugd/405339_fdc074ccaf5f4254b64d8f717d3176a0.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c23a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC23A | 5028 bytes |
SHA-256: 1f09512c08abd246b7ea813615bc396b5e3d77a917c17fc16c5948d2be54a02b |
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font_01_sfnt_off0000d355.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD355 | 10652 bytes |
SHA-256: 8eb0b333506b2a119995269d1c14b569aa2946276ffbcb2247249726a4288443 |
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font_02_sfnt_off0000f7c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7C6 | 16148 bytes |
SHA-256: 1a2b76eb92621148de57a48589384f2ed1ce1add53d2a8f9a0414c0ea737f4f8 |
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font_03_sfnt_off00010cbf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CBF | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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