MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF file contains multiple heuristics indicating malicious intent, including links to known malicious redirector infrastructure and a PDF link farm designed for SEO manipulation. The document body, though heavily obfuscated, suggests a lure for downloading a file, further supported by the 'SE_DOWNLOAD_BUTTON' heuristic. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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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.ru/wb?keyword=5.2.1.4%20packet%20tracer%20-%20configuring%20ssh%20instruction.pdf In PDF document text
- http://files.imesclay.com/uploads/1/3/1/8/131856352/pozeter.pdfIn PDF document text
- http://files.infinite.vc/uploads/1/3/2/7/132710715/f21a8bc12137f70.pdfIn PDF document text
- http://files.4-ucorp.com/uploads/1/3/0/7/130739567/7385382.pdfIn PDF document text
- http://files.theglitterfromashes.com/uploads/1/3/2/6/132682976/novewuruvelikopo.pdfIn PDF document text
- http://files.colinblakepsychometrics.com/uploads/1/3/1/4/131409009/busasamowifap.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/1/0431/5817/5893/files/78788383572.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8273/5006/files/87241980087.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4013/5575/files/mevafetagetejavoruradu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2817/5255/files/78584733751.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0147/9321/files/48560351385.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9362/2935/files/dobikanosi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6482/8838/files/minunosutetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9007/4005/files/nimokaxaze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6318/9405/files/70671474988.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0011/0999/files/ladigobajumebinuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2172/2015/files/55817331565.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_off00006de5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6DE5 | 5696 bytes |
SHA-256: b7ec3a4e6d44d8c9fde55d66e696f0da16a45c4d1b3d842c45c8f4a1dac8b316 |
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font_01_sfnt_off0000814a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x814A | 10808 bytes |
SHA-256: 22814c7c75e97ea4443943991dd955899d1f7a7d4f0ae721aa9efa2f1eddb5d6 |
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