MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/wb?keyword=how%20to%20learn%20korean%20language%20in%20english%20pdf, which is likely used to redirect users to a harmful destination. The document body, though heavily obfuscated, also contains this URL, suggesting it's part of the lure. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination.
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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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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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.com/wb?keyword=how%20to%20learn%20korean%20language%20in%20english%20pdf In PDF document text
- http://bukak.besedin.org/uploads/1/3/1/3/131398091/fe7d15989aa494.pdfIn PDF document text
- http://files.maxiandolikessler.com/uploads/1/3/2/6/132683289/9094524.pdfIn PDF document text
- http://files.singlewomanjoan.com/uploads/1/3/1/4/131406498/7119854.pdfIn PDF document text
- http://files.germanscalzo.com/uploads/1/3/2/6/132681456/5564080.pdfIn PDF document text
- http://files.thefeatherednestdowntownwestjefferson.com/uploads/1/3/1/8/131871786/139f61634f6868.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/1/0431/3979/3050/files/makenoxobelune.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9996/2024/files/98953380883.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7634/6266/files/57949292922.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9679/3503/files/92319076452.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3782/6973/files/givoxobigonane.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5592/3878/files/factorio_3_to_3_balancer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3552/5282/files/44279365290.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9876/5480/files/15047429082.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3445/0840/files/nuxeliwoxur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1692/0994/files/vijavalin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5951/0425/files/97887798424.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_off0000934a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x934A | 5420 bytes |
SHA-256: 77664a0b1ac79403ce6e8c1adee5ec3623e3aa0ddc8fa1e3d08db0a18a243fd3 |
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font_01_sfnt_off0000a5c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA5C6 | 10384 bytes |
SHA-256: a28f0a1e8fc39b7b755797fd435927eacf9474b11d588de3750f83f7b94e9c4c |
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