MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a mass link farm, with the primary URL leading to a known malicious redirector. The document body, though obfuscated, contains the target URL and appears to be a lure for a textbook PDF. The ML classifier strongly indicated maliciousness, supporting the redirector and link farm findings.
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.com/pify?keyword=an+introduction+to+logic+irving+copi+pdf
- http://files.calligraphicconnections.com/uploads/1/3/0/8/130814636/c357e5.pdf
- http://files.cakeneq.com/uploads/1/3/1/3/131383775/jogidifugoxibeb.pdf
- http://files.organicallyhers.com/uploads/1/3/1/3/131398075/zutesononadu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/8990/3264/files/19221114353.pdf
- https://cdn.shopify.com/s/files/1/0431/1983/7345/files/81048827674.pdf
- https://cdn.shopify.com/s/files/1/0436/2852/7776/files/90182880364.pdf
- https://cdn.shopify.com/s/files/1/0430/1661/8145/files/zeguxabumuber.pdf
- https://cdn.shopify.com/s/files/1/0437/8702/6581/files/texulovivosubemupegina.pdf
- https://cdn.shopify.com/s/files/1/0437/7418/1534/files/nmeros_primos_e_compostos.pdf
- https://cdn.shopify.com/s/files/1/0432/0867/1394/files/savenipodupirusab.pdf
- https://cdn.shopify.com/s/files/1/0439/4080/6824/files/dovefefonebek.pdf
- https://cdn.shopify.com/s/files/1/0437/0428/7383/files/tiluwud.pdf
- https://cdn.shopify.com/s/files/1/0435/3196/0474/files/madutivaki.pdf
- https://cdn.shopify.com/s/files/1/0429/8833/9354/files/gusuw.pdf
- https://cdn.shopify.com/s/files/1/0435/3340/2266/files/pegiba.pdf
- https://cdn.shopify.com/s/files/1/0439/5089/9368/files/centimeter_ruler_actual_size.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_off0000543b.bin33ea5a4a2af85c2d1c39fd18fe8ec3f494edf55780c900d9ab8b4394d1ce0be7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x543B | 4984 bytes |
font_01_sfnt_off0000654e.bin27313c5b39e0820546fbf7e05ba4ec1598ada10aedb443e79cf4998ada68c288 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x654E | 10204 bytes |
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