MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be a link farm designed to redirect users to malicious content, leveraging the document's apparent theme of educational worksheets.
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.ru/pify?keyword=punctuating+dialogue+worksheet+pdf+with+answers
- http://files.dyslexia-nsw.com.au/uploads/1/3/2/6/132683087/3610865.pdf
- http://vuzokuk.friendshipcharitiesinc.org/uploads/1/3/1/8/131857419/xixeweruvagodis.pdf
- http://tukuvat.lavedettebooking.com/uploads/1/3/2/7/132710797/660df9d82f346.pdf
- https://cdn.shopify.com/s/files/1/0431/9592/4640/files/wondershareelement_6_professional_crack.pdf
- https://cdn.shopify.com/s/files/1/0428/8161/3987/files/58682572800.pdf
- https://cdn.shopify.com/s/files/1/0437/4138/0759/files/holt_mcdougal_larson_algebra_2_common_core_textbook.pdf
- https://cdn.shopify.com/s/files/1/0433/0923/6374/files/gajul.pdf
- https://cdn.shopify.com/s/files/1/0431/4333/2000/files/cisco_ccna_routing_and_switching_icnd1_pdf.pdf
- https://cdn.shopify.com/s/files/1/0439/6823/3630/files/71716445440.pdf
- https://cdn.shopify.com/s/files/1/0452/4628/3937/files/10th_maths_textbook_download.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92283418618.pdf
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/tolkien_letters.pdf
- https://cdn.shopify.com/s/files/1/0428/5625/1555/files/pidopinogi.pdf
- https://cdn.shopify.com/s/files/1/0434/4712/4130/files/1824414769.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_off000047f8.bincb9cdac1f3b47a68d1daedf76dab448cc76d35c695fb678e7a4ec51a749cc718 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x47F8 | 5576 bytes |
font_01_sfnt_off00005af0.bine269f555bfa6759bc3a6879254ff3eff6d2f111c4da823bd393f9912754fc2f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5AF0 | 9828 bytes |
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