MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many of which point to redirector infrastructure. The primary redirector URL is `https://ttraff.ru/pify?keyword=cambridge+english+for+engineering+solutions+pdf`, which is also present in the document body. This suggests a phishing or scam attempt using a link farm to distribute malicious content. No scripts were extracted, but the presence of numerous links and the ML classifier output strongly indicate malicious intent.
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=cambridge+english+for+engineering+solutions+pdf In PDF document text
- http://melada.interviewsandreviews.com/uploads/1/3/1/3/131379246/3701411.pdfIn PDF document text
- http://files.sargent-thamm.com/uploads/1/3/0/9/130969633/6207205.pdfIn PDF document text
- http://files.wflta.com/uploads/1/3/2/7/132710676/1036563.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/1/0433/7749/2118/files/formacion_de_la_tierra_y_su_atmosfera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5323/6902/files/c._r._e_form_3_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3061/8011/files/mebex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1187/4716/files/dajixuro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6850/5766/files/7539732370.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0553/3604/files/68306962717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/8432/0661/files/origin_and_development_of_sociology_and_anthropology.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5158/8507/files/vbs_export_to_excel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/dufamilij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6564/7002/files/liwulakor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3182/1468/files/biomedical_waste_management_in_marathi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/2121/7442/files/alphabet_tracing_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/4645/8776/files/mopigexenobumukemiwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1382/3909/files/38915935244.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
🗂 Part of campaign:
businesstriptochina.com
3 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001b5eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B5EB | 5500 bytes |
SHA-256: d2d27dd111d8743345224d3818ee79d61e9818ed7f688d0a1c83ca9722b517df |
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font_01_sfnt_off0001c86c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C86C | 16260 bytes |
SHA-256: d15bafd194b420f0114018d3892f465f52bc619c743255f33ea40498e4cf06cd |
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