MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass of external links, including one pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL and a worksheet title, suggesting a lure to trick users into clicking the malicious link. The presence of numerous Shopify-hosted PDF links indicates a link farm strategy to improve SEO for malicious content.
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/pify?keyword=ordered+pair+solutions+to+linear+equations+worksheet In PDF document text
- http://mebesib.swindispensaries.com/uploads/1/3/2/6/132681670/9599ab3d.pdfIn PDF document text
- http://zuparam.lifeword.nl/uploads/1/3/0/7/130738714/xagibukugi.pdfIn PDF document text
- http://files.dakotaashleymarie.com/uploads/1/3/2/7/132740639/dd3bcffaa44e7.pdfIn PDF document text
- http://files.maaemi.com/uploads/1/3/1/3/131379439/4098184.pdfIn PDF document text
- http://files.the-word-is-out.com/uploads/1/3/2/3/132303238/276b26a44fd79c.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/1/0433/4845/9675/files/jujimizisesekafijeja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9445/0078/files/letter_of_intent_graduate_school.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2564/5211/files/penadaxisifidirav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1959/0056/files/lojadipofoxegula.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3016/8230/files/joxugisomazu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2401/3722/files/40978921845.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0776/1819/files/36948016836.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5317/0334/files/agriculture_sector_in_tanzania.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7372/4825/files/tonugixixagewugesasifix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0460/5771/7915/files/91741074750.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7578/8184/files/fizotosodi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3369/8209/files/kebirinavifaxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0522/1784/files/goldman_fristoe_test_of_articulation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5419/3047/files/sofevu.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_off00004d5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D5A | 5356 bytes |
SHA-256: 349d3ec10568ffa4b0a77f6a292a90884f8538787ff6d385b535ddb438f865b1 |
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font_01_sfnt_off00005f9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F9A | 8876 bytes |
SHA-256: 439b72dafd014fecd02509ae9bb213094728efe9f6ab67f70c6c8534ff2478e5 |
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