MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm designed to obscure malicious redirects. One critical heuristic identified a direct link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to academic papers, suggesting a lure to disguise the malicious intent. The ML classifier 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/pify?keyword=diminishing+marginal+utility+in+investment+in+education+pdf
- http://files.srm2020.org/uploads/1/3/1/3/131379718/d74c7f3339.pdf
- http://files.arisebjj.com/uploads/1/3/2/7/132710797/zujexasigeku.pdf
- http://files.now-hope.org/uploads/1/3/0/7/130776673/mitawarezub-retemepaxaxas-mosiduga.pdf
- https://cdn.shopif
- https://cdn.shopify.com/s/files/1/0436/3796/4960/files/32441932634.pdf
- https://cdn.shopify.com/s/files/1/0429/7916/4314/files/jemorig.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/43504582291.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xorufolikuvuzinekotawoxo.pdf
- https://cdn.shopify.com/s/files/1/0439/1347/8312/files/76637638368.pdf
- https://cdn.shopify.com/s/files/1/0433/8493/0462/files/zubaxitiwafufelilebaw.pdf
- https://cdn.shopify.com/s/files/1/0431/6741/6488/files/94840394343.pdf
- https://cdn.shopify.com/s/files/1/0429/0979/4463/files/76257229757.pdf
- https://cdn.shopify.com/s/files/1/0431/8252/2528/files/nugomibinezerig.pdf
- https://cdn.shopify.com/s/files/1/0428/9721/1558/files/51787059907.pdf
- https://cdn.shopify.com/s/files/1/0429/6792/4899/files/44779001684.pdf
- https://cdn.shopify.com/s/files/1/0435/5319/4133/files/46942956009.pdf
- https://cdn.shopify.com/s/files/1/0433/3328/8088/files/73940691920.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_off00007284.bin0d0c19be4aaacc15eedd7d1bf1714533c8a0f280052c42bb0ef4d28d98cf0e53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7284 | 5612 bytes |
font_01_sfnt_off00008571.binf9db81ae85e70bf8cbe8a0acc88ec88e8c80a9e9a3a9bac7779b773c7eb528b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8571 | 10280 bytes |
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