MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One of the primary links, 'https://ttraff.ru/pify?keyword=math+sequences+worksheet+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking URLs hosted on Shopify, suggesting a lure to a malicious site under the guise of educational 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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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.ru/pify?keyword=math+sequences+worksheet+pdf In PDF document text
- http://files.kevintdcobbs.com/uploads/1/3/0/7/130739789/desuvuvosudamebufab.pdfIn PDF document text
- http://files.serenitycottagelondonontariocanada.com/uploads/1/3/0/8/130813992/0ff871b786918.pdfIn PDF document text
- http://files.diningsolutionswickerpark.com/uploads/1/3/1/1/131164159/wegunanaberago_sevudogi_sodunivogumuzif.pdfIn PDF document text
- http://files.blankpagesworkshops.com/uploads/1/3/0/9/130968996/6c1f7be0cfe6a.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/1/0439/3621/9291/files/43690021167.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/risekumomivedopela.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7077/5706/files/34479901002.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4334/7877/files/xexej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9726/0192/files/firorake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1416/8480/files/sogavodab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7047/9772/files/glass_no_kamen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6463/1195/files/46358086254.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9114/0501/files/77803124775.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_off000061ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61AC | 5496 bytes |
SHA-256: b371c2beea073dfa77283cec5c108e9be78619c21caae5d805537a8399a20e19 |
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font_01_sfnt_off00007475.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7475 | 10180 bytes |
SHA-256: 6d830b22799df76a84ded9fdb34c7d3a3db841baa46ed5616a4afd74fdbaf0ff |
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