MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.ru). The ML classifier strongly indicates maliciousness, and the presence of numerous links to potentially benign Shopify-hosted PDFs alongside the malicious redirector suggests a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL, which likely serves as a gateway to phishing or malware delivery.
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=centroid+and+moment+of+inertia+nptel+pdf In PDF document text
- http://files.sullidrama.com/uploads/1/3/0/7/130739119/810018.pdfIn PDF document text
- http://files.domainedefrance.com/uploads/1/3/1/8/131856162/2893559.pdfIn PDF document text
- http://files.countryneedleworks.net/uploads/1/3/0/7/130775197/votexeberoxakus.pdfIn PDF document text
- http://files.mindfulhearthealth.org/uploads/1/3/1/6/131606617/fumifagupuwujojufubi.pdfIn PDF document text
- http://files.betterbodiesgympattaya.com/uploads/1/3/0/7/130738607/jisuvap_liraxaset_zukonik_wubevatonaxo.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/1/0435/7799/9519/files/countdown_timer_html_javascript.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8976/5279/files/gimekodugujanurawi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1783/7467/files/66553732032.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9005/9176/files/69023206080.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0044/6626/files/sifap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2011/4331/files/84046870671.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6558/7352/files/young_jeezy_the_recession_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8032/7076/files/31546680698.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6618/7176/files/harley_owners_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9693/2505/files/pixuwurevatalage.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4030/9402/files/39347924957.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9977/5381/files/ziwituditifavu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7502/4549/files/lutozasuwadixet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1437/4054/files/wilefewazorazigomunoji.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_off0000629b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x629B | 4916 bytes |
SHA-256: 969071238f92c05673994f620635e0c91e4969016f634971be8dd27ea0681f11 |
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font_01_sfnt_off00007339.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7339 | 9816 bytes |
SHA-256: 21fc5345c439b406e80a063671826fe2881cb931ab57b995122ef1362bd56cd3 |
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