MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
This PDF file contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm designed for SEO manipulation. One of the primary links, 'https://ttraff.ru/wb?keyword=helping%20verb%20worksheets%20grade%204', is flagged as a malicious redirector. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains references to educational content, likely a lure to encourage clicks on the malicious links.
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.ru/wb?keyword=helping%20verb%20worksheets%20grade%204 In PDF document text
- http://files.gallantacademy.com/uploads/1/3/1/4/131438330/981531.pdfIn PDF document text
- http://files.jenniferbiedermannjewelry.com/uploads/1/3/1/8/131871633/xaramudus.pdfIn PDF document text
- http://files.stjohnthebaptistschoolalumni.com/uploads/1/3/2/6/132696048/zereparebi_kakepevido.pdfIn PDF document text
- http://files.apollobatonrouge.com/uploads/1/3/1/4/131454355/750ac2.pdfIn PDF document text
- http://files.danburydentist.us/uploads/1/3/2/8/132815872/xinefozi-vefevedag-juviwuk.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/1/0430/3123/2675/files/koxabitisurobaleruded.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2341/6987/files/bexaridejapazewopisawe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7719/8229/files/89801917544.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0024/0024/files/kideruxopenimuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7372/3800/files/lesiwiseguxutama.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5373/6351/files/tujapopinogegebo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1239/9009/files/botepujabana.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6163/9318/files/43416666450.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0781/8398/files/44310935903.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1916/6105/files/ratudaponitur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2217/8710/files/pozegaxilakibisera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0876/1764/files/29508119601.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_off00006374.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6374 | 5624 bytes |
SHA-256: 8cbce4cf15a8c1bb7e4bb7492f0da16cd06c651058d84e896bea43b93504ae8a |
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font_01_sfnt_off000076aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76AA | 10536 bytes |
SHA-256: 309f29bfc3c9ab97c8896913079161cb66aeb731ba5973aa4f24b8b2e933a6e0 |
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