MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a "binomial expansion example pdf". The document also contains a large number of embedded links, many of which point to benign PDF files, suggesting a link farm or SEO poisoning attempt. The ML classifier also 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.com/wix?keyword=binomial+expansion+example+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/5a1791_c083efa2a4ed4b02b4f9e8f0a93b06ae.pdf
- https://static.usrfiles.com/ugd/0dd040_d11d4a745cf646438416c5011b3bbfce.pdf
- https://static.usrfiles.com/ugd/6df952_a9533f8147df4e3f8c843071df716e7d.pdf
- https://static.usrfiles.com/ugd/227d0f_7e1b23f7d7e74d1daf738023dd165264.pdf
- https://cdn.shopify.com/s/files/1/0436/4291/2926/files/31170504957.pdf
- https://cdn.shopify.com/s/files/1/0437/9050/0001/files/7721175086.pdf
- https://cdn.shopify.com/s/files/1/0437/5805/9674/files/describe_fetal_circulation.pdf
- https://cdn.shopify.com/s/files/1/0446/0068/8804/files/grade_2_math_addition_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0431/2553/8973/files/19093099547.pdf
- https://cdn.shopify.com/s/files/1/0432/8957/5588/files/2997735614.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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f41.binc123ce438149f25a0cc424350c9b9dbb036a5e47fa70ffc363fb7b428aecdb39 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F41 | 5208 bytes |
font_01_sfnt_off000080ed.binacfbef11a708ebde4183f0824f3a37dfbc89fce14778a72268cb5ec6290cde40 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80ED | 14552 bytes |
font_02_sfnt_off0000af4f.bin3f616520caea2cd7adbf8385033906152ef8c30f7b3049ac7e463ea285166294 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF4F | 16324 bytes |
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