MALICIOUS
194
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 external websites. One of these links, 'https://ttraff.ru/wb?keyword=ocr%20gcse%20maths%20past%20papers%20pdf', is flagged as a malicious redirector. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. No scripts were extracted from this sample.
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=ocr%20gcse%20maths%20past%20papers%20pdf In PDF document text
- http://files.deasafirahilda.com/uploads/1/3/0/8/130873945/divegufonexuzav-guvod-topap-vaximoki.pdfIn PDF document text
- http://files.denaults.com/uploads/1/3/0/7/130738969/masomenujixala_zuzizapuxasoda.pdfIn PDF document text
- http://files.edgingtonroaddistrict.org/uploads/1/3/1/1/131163932/difomaza_dubovunen_xalexujoxefop.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://serifutaje.files.wordpress.com/2020/07/jezadumavukogejaviviw.pdfIn PDF document text
- https://gatidokojoku.files.wordpress.com/2020/07/sojetawabapanovarimif.pdfIn PDF document text
- https://kizudefogelo.files.wordpress.com/2020/07/suzufazapava.pdfIn PDF document text
- https://xovexin.files.wordpress.com/2020/06/fobilakedefuteluzaduxijak.pdfIn PDF document text
- https://bavorekivaso.files.wordpress.com/2020/06/kuwazud.pdfIn PDF document text
- https://vaduwokasi.files.wordpress.com/2020/07/jekosemipujeti.pdfIn PDF document text
- https://bunavetesew.files.wordpress.com/2020/07/61012648756.pdfIn PDF document text
- https://doraxurewaz.files.wordpress.com/2020/06/wanozovufemim.pdfIn PDF document text
- https://sefilako.files.wordpress.com/2020/06/bemajalegedof.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3804/7384/files/45068557007.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9735/0554/files/pefiwowidu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4960/7590/files/32914748004.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3848/2332/files/74717036516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0533/0083/files/1647739621.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0763/1782/files/bopuki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5942/1092/files/xoxuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0276/4184/files/pinofekefomefevagonulok.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_off00006781.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6781 | 5088 bytes |
SHA-256: a89f9cf545cbe1351be270fd91ba33a00f5f80071fafd00d70f31b77c207f575 |
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font_01_sfnt_off000078cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78CB | 12416 bytes |
SHA-256: 0b7a34bd93f35f3b990f606217e21a300be225366d3b479c1d5a312fec599257 |
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