MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a research paper. The document body also contains this URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the malicious nature of the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination.
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=magnetocaloric%20energy%20conversion%20from%20theory%20to%20applications%20pdf In PDF document text
- http://files.burkebros-cheltenham.co.uk/uploads/1/3/0/8/130814411/c1878a8.pdfIn PDF document text
- http://files.mccormickqwik.com/uploads/1/3/0/9/130969452/7921003.pdfIn PDF document text
- http://firufiz.year8religionlynam.com/uploads/1/3/0/7/130776760/zutan_fakujokemi.pdfIn PDF document text
- http://zewudiwo.roarsandwhispersphs.com/uploads/1/3/1/4/131453005/6962362.pdfIn PDF document text
- http://files.landsendguildofartists.co.uk/uploads/1/3/1/6/131606803/nirimakojunuk.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/1/0434/0645/9029/files/morowarizuxoniwumemi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6579/4965/files/32261885826.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5654/4409/files/camping_checklist_australia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5378/3957/files/33759439958.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4321/6789/files/rowodiwifetaxijume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5900/9943/files/88266199628.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1126/0062/files/zarew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0905/6666/files/getodazusokuzeromiro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4578/9600/files/miocardiopatia_dilatada_periparto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1097/3083/files/branches_of_horticulture_and_its_definition.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000081ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x81EC | 5736 bytes |
SHA-256: 50ffe1a3c9290ea156700e3b4cc0b08f01e2946c684582f0b259761f1bf9f50b |
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font_01_sfnt_off0000954e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x954E | 10788 bytes |
SHA-256: df272422ef778a2ed13ff578cd2c8f633b33931c2e271a3cc72717ee6deca3f2 |
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font_02_sfnt_off0000ba1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA1E | 16176 bytes |
SHA-256: b746209829ab2c6483433553037e2806aa40e4dabe1943e391f02759c7fa582f |
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