MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm and a specific URL that is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a calendar template and the malicious URL, suggesting a lure. The presence of numerous external links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.
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=november+2018+calendar+template+word+doc
- http://files.impactaquariums.com/uploads/1/3/0/7/130738568/zitemak.pdf
- http://files.thehandycornershop.co.uk/uploads/1/3/1/3/131381363/7620326.pdf
- https://cdn.shopify.com/s/files/1/0434/4751/7341/files/60156562426.pdf
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/permissions_for_ssh_key.pdf
- https://cdn.shopify.com/s/files/1/0431/3228/9178/files/zejej.pdf
- https://cdn.shopify.com/s/files/1/0434/3303/3880/files/tesis_de_brosimum_alicastrum.pdf
- https://cdn.shopify.com/s/files/1/0437/1575/6181/files/28_days_later_torrent.pdf
- https://cdn.shopify.com/s/files/1/0437/3181/2504/files/biology_book_11th.pdf
- https://cdn.shopify.com/s/files/1/0435/6302/4542/files/16193762486.pdf
- https://cdn.shopify.com/s/files/1/0428/3714/7811/files/aula_plataforma_virtual_uladech.pdf
- https://cdn.shopify.com/s/files/1/0431/3009/3728/files/dikigotuderojegudezosiz.pdf
- https://cdn.shopify.com/s/files/1/0461/8456/2841/files/ccna_1_for_beginners_notes.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_off00007103.bina653bd676e547f6a53ebb88ee494198db3188b958ccb2660ed9c4010280a028f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7103 | 5824 bytes |
font_01_sfnt_off000084cd.bind5f97fe8bb2fa2d9c9d695162101683e6a1287c3d7ab387c54969b2e8f1bd58b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x84CD | 10396 bytes |
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