MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically targeting educational keywords. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector, and PDF_SEO_LINK_FARM shows a mass of external PDF links, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=high+frequency+words+5th+grade+worksheets, which is the primary lure.
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/pify?keyword=high+frequency+words+5th+grade+worksheets In PDF document text
- http://mijimudol.annethomassen.com/uploads/1/3/1/0/131070381/xegol_xidikuxix.pdfIn PDF document text
- http://zifugo.flholmes.com/uploads/1/3/1/4/131482995/rixetedexif_ribojubawerupal.pdfIn PDF document text
- http://pupefinax.robynpforrryan.com/uploads/1/3/2/6/132696063/pegekepogon.pdfIn PDF document text
- http://dagut.akenkan.org/uploads/1/3/1/6/131637814/55b5d.pdfIn PDF document text
- http://files.roundtheworld4jo.org/uploads/1/3/1/4/131453588/sekilagoxo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0434/5351/3894/files/vipegegezopobixivarat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5543/0309/files/depuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0832/7829/files/sudok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2352/4255/files/linux_assembly_language_programming.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4783/0183/files/selanupaxumevaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4294/6715/files/78080740426.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0334/7097/files/19785409299.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6646/6216/files/sefupebu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4575/6833/files/72739306975.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9125/5713/files/sikopolar.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000090d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x90D7 | 3080 bytes |
SHA-256: 3ea9dc0fe5daeba8b7c1286de8752a991578e51b79301a8010be3d8f06b4997c |
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font_01_sfnt_off00009bdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BDF | 5604 bytes |
SHA-256: f9f306934c7d83f6a87c9c30475e637cb268865d6adb5a3c5536f1787a02d5cb |
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font_02_sfnt_off0000aef8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAEF8 | 9876 bytes |
SHA-256: f9b609bac3472c39c80a1b7c8f2c9baa052b987c845f5cf326d60c4d38111c8c |
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font_03_sfnt_off0000d0c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0C5 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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