MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link redirects to a URL associated with malicious redirector infrastructure. The document body, while containing educational-sounding text, is primarily a lure to encourage users to click these links, leading to potentially malicious content. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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.ru/wb?keyword=subtracting%20fractions%20with%20unlike%20denominators%20worksheets%20with%20answer%20key In PDF document text
- http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdfIn PDF document text
- http://files.neora.ca/uploads/1/3/2/6/132681758/fepuzijonepida-gumulod-fivuzinik.pdfIn PDF document text
- http://files.nickpateras.org/uploads/1/3/2/7/132710655/d914f150ae.pdfIn PDF document text
- http://files.lalookboutique.com/uploads/1/3/2/7/132740398/4d6e735e65.pdfIn PDF document text
- http://files.kitchenkutz.net/uploads/1/3/2/7/132741181/vuzukekaw-boxatulawonekep.pdfIn PDF document text
- http://files.heirlooms.org/uploads/1/3/0/7/130739686/2587f6633b1b6.pdfIn PDF document text
- http://files.aofeathers.com/uploads/1/3/1/3/131398605/sukosagosomuz-rofagidib-nibis.pdfIn PDF document text
- http://files.approachapparel.com/uploads/1/3/1/3/131383664/8009279.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://walumuvov.files.wordpress.com/2020/06/35614988985.pdfIn PDF document text
- https://xuturevum.files.wordpress.com/2020/07/koleduduxigexajoworeguk.pdfIn PDF document text
- https://gefujonusa.files.wordpress.com/2020/06/ruwupuzisobamujojejetimo.pdfIn PDF document text
- https://demolig.files.wordpress.com/2020/07/53289418118.pdfIn PDF document text
- https://powudowipu.files.wordpress.com/2020/06/54549769453.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87932640634.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xatet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82127534182.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005cc0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CC0 | 5816 bytes |
SHA-256: 4ef3c59c01b6cdb705aac0a6e8a3fb4c1216eeb6712d613b5bf5f7cb9063ff98 |
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font_01_sfnt_off0000706e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x706E | 9772 bytes |
SHA-256: 6d2bc8910314d0007a314c166a32728562de3c0d87e6c5b85263a0754fca5710 |
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