MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One prominent URL, 'https://ttraff.ru/wix?keyword=major+differences+between+bacteria+and+archaea', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to 'Major differences between bacteria and archaea' and the wkhtmltopdf application, suggesting a lure to disguise the malicious link distribution. The ML classifier also strongly indicated 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.ru/wix?keyword=major+differences+between+bacteria+and+archaea
- https://cdn.shopify.com/s/files/1/0433/6130/4728/files/xanubakopi.pdf
- https://cdn.shopify.com/s/files/1/0456/9815/4652/files/15492185639.pdf
- https://cdn.shopify.com/s/files/1/0431/6702/3259/files/getalobusitipiwazajeloxu.pdf
- https://cdn.shopify.com/s/files/1/0437/5071/9637/files/resources_for_reaching_all_learners.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/architectural_perspective_drawing.pdf
- https://cdn.shopify.com/s/files/1/0433/6523/6886/files/vemupepa.pdf
- https://cdn.shopify.com/s/files/1/0465/2426/8702/files/xawujewabelefimu.pdf
- https://static.usrfiles.com/ugd/b8c837_fb5d8e9373eb4ad481575361d91ae47b.pdf
- https://static.usrfiles.com/ugd/b8c837_7553b7458ee24112bf07b3e51ad24065.pdf
- https://static.usrfiles.com/ugd/b8c837_5c8b9c234fc9424180aa2cc9a37cbb81.pdf
- https://static.usrfiles.com/ugd/b8c837_ba92fc1e47574f87b021a1195af94fb5.pdf
- https://static.usrfiles.com/ugd/b8c837_682d915c828e49ccae42f5eabca10abc.pdf
- https://static.usrfiles.com/ugd/b8c837_bf551a7e46aa44c3a958e961fa977820.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_off00007a6c.binf62ebb0544d07e764f49eef1fa7564637d941d1cf83167971b878639cca474dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A6C | 5392 bytes |
font_01_sfnt_off00008cd5.bind82c739133fb18cd08e9217f199b8af6b67b6e7d691756c5199d38f5ed04f406 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CD5 | 10208 bytes |
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