MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a malicious redirector link disguised as a download button, intended to lure the user to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources. The primary malicious IOC is the redirector URL, which is designed to initiate a further download or redirect to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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PHP webshell / backdoor source high WEBSHELL_PHPThe file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.cc/pify?keyword=coordinate+geometry+formula+sheet+pdf In PDF document text
- http://files.sparksprotectionusa.com/uploads/1/3/0/9/130969663/wavetigaka_sawakuzudetijug_bogiroxekox.pdfIn PDF document text
- http://files.stalbansbg.co.uk/uploads/1/3/1/4/131411596/xororodivofuxum.pdfIn PDF document text
- http://files.rzecoseal.net/uploads/1/3/0/9/130969683/5398681.pdfIn PDF document text
- http://files.thatonepinkdog.studio/uploads/1/3/1/1/131163879/6178361.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6016/5797/files/sunuju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7216/7841/files/39729827487.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0923/5353/files/83146399842.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0885/2117/files/kuwoxugoguzesajabunafalef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8929/7568/files/doweti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0491/1006/files/http__centurylink._net.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6962/6781/files/sazowexorezedidofututuzan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4162/8072/files/wamovirutalukuvaxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6931/7020/files/xojuwasatorilix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8248/9762/files/fogosifomef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4903/1592/files/25938946868.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6784/2465/files/monexa.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_off00006bef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BEF | 5464 bytes |
SHA-256: a0faca9851cedf811b0442fadcc8b474a097faccb046ae5e262252f56f7159c7 |
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font_01_sfnt_off00007e61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E61 | 14656 bytes |
SHA-256: 5b00122cab67117d45ad3595eb915ba51d60b45695c64cf9fe6361885e910ebe |
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