MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a mass of external links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. The document body, though partially corrupted, contains the query 'square root of 98 in decimal form' which is also present in the malicious redirector URL, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious.
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=square+root+of+98+in+decimal+form
- http://gobarus.tanyagjewelry.com/uploads/1/3/0/7/130738850/6345719.pdf
- http://files.dorabramden.com/uploads/1/3/1/3/131382141/3729828.pdf
- http://files.albertacriticalcaretraining.com/uploads/1/3/0/7/130740127/ab7bc2a79e00.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/6385/9610/files/mozubedakid.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdf
- https://cdn.shopify.com/s/files/1/0430/4551/9513/files/guideline_pneumonia_pada_anak.pdf
- https://cdn.shopify.com/s/files/1/0439/0558/1211/files/gexarotobid.pdf
- https://cdn.shopify.com/s/files/1/0431/7983/5547/files/reselujusisozebaxuduxe.pdf
- https://cdn.shopify.com/s/files/1/0433/9315/5237/files/15757191424.pdf
- https://cdn.shopify.com/s/files/1/0431/4886/9786/files/utmost_good_faith_in_insurance_law.pdf
- https://cdn.shopify.com/s/files/1/0433/0101/1614/files/79530330191.pdf
- https://cdn.shopify.com/s/files/1/0433/0638/5573/files/xudufetazu.pdf
- https://cdn.shopify.com/s/files/1/0432/1312/7835/files/57072696408.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_off000059e4.binb7a8bc964b38ccd3e5c4cfe6323c68fc9d50fe8e68c9365a4d0c975235226004 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x59E4 | 5568 bytes |
font_01_sfnt_off00006cb8.bin8a91d7f1e5277411f24e6d2d40be4c2c1968d4dafd44f2bcd1dd2c17a9f358c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CB8 | 10428 bytes |
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