MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO abuse tactic. One critical heuristic identified a link to known malicious redirector infrastructure, which is likely the primary attack vector. The document body, though heavily obfuscated, contains text related to 'amino acid quiz pdf', likely a lure to encourage clicks on the malicious links.
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/pify?keyword=amino+acid+quiz+pdf
- http://files.pcaspiritwear.com/uploads/1/3/1/3/131380850/zofadatudaso.pdf
- http://files.witchshopmiami.com/uploads/1/3/0/7/130739758/liseserukukomo.pdf
- http://files.pollination-project.org/uploads/1/3/0/7/130776877/66a74dcab517e8.pdf
- http://files.saintstanislaus.com/uploads/1/3/1/1/131164063/5645926.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/2514/5760/files/vawovimukojagulav.pdf
- https://cdn.shopify.com/s/files/1/0432/5926/5188/files/lobakademonewesuwudel.pdf
- https://cdn.shopify.com/s/files/1/0430/3273/9989/files/jenomekagalebes.pdf
- https://cdn.shopify.com/s/files/1/0440/5932/8662/files/25673162420.pdf
- https://cdn.shopify.com/s/files/1/0433/4705/0661/files/tagoruvobez.pdf
- https://cdn.shopify.com/s/files/1/0431/8615/9767/files/vojulerides.pdf
- https://cdn.shopify.com/s/files/1/0433/6350/0197/files/dizavote.pdf
- https://cdn.shopify.com/s/files/1/0435/1921/3727/files/56233793502.pdf
- https://cdn.shopify.com/s/files/1/0433/0727/0297/files/varedenarafipikinotimobuw.pdf
- https://cdn.shopify.com/s/files/1/0431/4749/3536/files/bidoradadeb.pdf
- https://cdn.shopify.com/s/files/1/0435/5905/9615/files/69424312758.pdf
- https://cdn.shopify.com/s/files/1/0431/3913/7702/files/borez.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_off000061ab.bindb7ba092687ebf7f8e5af817f2445310783e3ac3d2699dbe83a41fc43b8d17ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61AB | 4844 bytes |
font_01_sfnt_off00007202.bind087ff653cb9a61eeefbaf1d02dffac1ea374c0110b7dff38e76fbaa90f77f95 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7202 | 10672 bytes |
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