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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, appears to reference academic material, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious nature of this PDF.
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=ecgs+made+easy+5th+edition+answers
- http://files.nash-style.com/uploads/1/3/1/4/131455337/694de57c.pdf
- http://files.clubcollege-bound.com/uploads/1/3/1/4/131436997/2009637.pdf
- http://files.threeriversautomodelers.net/uploads/1/3/0/7/130776502/34d52874e5f9a6.pdf
- http://files.threeriversautomodelers.net/uploads/1/3/0/7/130776502/34d52874e5f9a6.pd
- https://cdn.shopify.com/s/files/1/0432/0041/3856/files/bujidarakasaw.pdf
- https://cdn.shopify.com/s/files/1/0437/7129/7943/files/25111171343.pdf
- https://cdn.shopify.com/s/files/1/0432/9812/8036/files/5240942609.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
- https://cdn.shopify.com/s/files/1/0431/1754/3588/files/wetuwulurisusifeso.pdf
- https://cdn.shopify.com/s/files/1/0432/7230/6846/files/55340929656.pdf
- https://cdn.shopify.com/s/files/1/0431/5391/6053/files/vokotama.pdf
- https://cdn.shopify.com/s/files/1/0428/4357/0343/files/61490013766.pdf
- https://cdn.shopify.com/s/files/1/0431/3396/0341/files/tuluvab.pdf
- https://cdn.shopify.com/s/files/1/0435/5883/0229/files/25170480005.pdf
- https://cdn.shopify.com/s/files/1/0429/2762/0249/files/49202219053.pdf
- https://cdn.shopify.com/s/files/1/0433/0120/8232/files/53969021903.pdf
- https://cdn.shopify.com/s/files/1/0433/0671/3253/files/95630963478.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_off0000577d.bin0e9b05464a73ef2229c9e86ceb232b4dadce5e3139086795777e6e789414dc55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x577D | 5384 bytes |
font_01_sfnt_off000069b9.bin7aa7de6522783017332b649577634bde839fc8bd80083dd3b6860e0dea5d0ea7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69B9 | 9796 bytes |
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