MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a redirector service. The document body text, though corrupted, suggests a lure related to 'worksheet answers', and the primary malicious URL is a redirector designed to lead users to potentially harmful content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing a mass external link farm.
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=equivalent+expressions+independent+practice+worksheet+2+answers
- http://files.thewea.org/uploads/1/3/1/8/131856446/0b6869be1.pdf
- http://zusotagub.ascend111.com/uploads/1/3/0/7/130776433/35c49759b9d08a0.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.opentle.org
- https://cdn.shopify.com/s/files/1/0438/2212/1122/files/37963973089.pdf
- https://cdn.shopify.com/s/files/1/0433/2103/2859/files/xuvizavofabajak.pdf
- https://cdn.shopify.com/s/files/1/0428/2197/6220/files/72707431275.pdf
- https://cdn.shopify.com/s/files/1/0430/9280/3744/files/41101337748.pdf
- https://cdn.shopify.com/s/files/1/0434/4155/3575/files/bupuvusebunawimot.pdf
- https://cdn.shopify.com/s/files/1/0431/4651/0504/files/discord_writing_commands.pdf
- https://cdn.shopify.com/s/files/1/0428/0143/0695/files/18929228210.pdf
- https://cdn.shopify.com/s/files/1/0431/8468/5224/files/giwinumawi.pdf
- https://cdn.shopify.com/s/files/1/0438/4060/2269/files/patent_ductus_arteriosus_2020.pdf
- https://cdn.shopify.com/s/files/1/0434/6888/2072/files/raluwesagoxasugizojo.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://www.gnu.org/licenses/gpl.html
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000042fa.bin41f00212674565add16b3cfd2bceebb77485c4d7f785cf2c2b8b6ebd216934e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x42FA | 5660 bytes |
font_01_sfnt_off00005644.bin7a02da73c5ff24218d04b188db7d31ceb9303d5dedd43b645f18a615a19d9b6a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5644 | 6068 bytes |
font_02_sfnt_off000065f4.binff9ef3013b7cb57531b6cf100f1e92733456ca3461475745f7d20f591631c630 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65F4 | 9568 bytes |
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