MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous links to external resources, masquerading as an educational notification. The primary redirector URL, https://ttraff.ru/wb?keyword=andhra%20university%20distance%20education%20notification%202019-20%20pdf, is flagged as malicious. The document also exhibits characteristics of an SEO link farm, with many links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results for malicious distribution. No scripts were extracted, but the embedded links are the primary vector for this attack.
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=andhra%20university%20distance%20education%20notification%202019-20%20pdf In PDF document text
- http://files.seanaffordfineartstudio.co.uk/uploads/1/3/1/4/131438461/9233b5592b64.pdfIn PDF document text
- http://tafavuv.dogtrainingismypassion.com/uploads/1/3/0/7/130776031/rameb.pdfIn PDF document text
- http://files.nebulawebsolutions.com.au/uploads/1/3/2/6/132696249/dexuzijolopu.pdfIn PDF document text
- http://files.abcdswoh.org/uploads/1/3/1/0/131071067/4754929.pdfIn PDF document text
- http://toxavi.mintzathletics.com/uploads/1/3/2/8/132814930/a3af5b7a5af4cfb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/datutik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6734/1981/files/66760697433.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8158/0188/files/xowopanivesebi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5107/4214/files/mifojesob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9116/5333/files/nelowujaboxoloworenaka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8132/5987/files/27151895691.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6104/1569/files/gajivatakerikozuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2739/8807/files/pipoxukalu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4622/4551/files/33295254330.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8638/0197/files/dugazelag.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006d6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D6D | 5876 bytes |
SHA-256: 97409c1494896a33291d4997e50024f8b7114183ad4afaa6b9c13b4732300361 |
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font_01_sfnt_off00008171.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8171 | 4432 bytes |
SHA-256: 652e807f5a3f661b4b7e392ef85d86386493b6ca9f24b2a244a871a4e3a37ff7 |
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font_02_sfnt_off0000918f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x918F | 14688 bytes |
SHA-256: e6d9710b833700db7e427aba5a7dd510acc0dffe6b29346adee7e0c6e9d93de8 |
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