MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of a SEO link farm designed to lure users with seemingly legitimate document titles. The ML classifier also strongly indicated maliciousness.
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=valvular+heart+disease+and+anesthesia+pdf In PDF document text
- http://files.dustinmarquel.com/uploads/1/3/0/7/130776499/8c361e3.pdfIn PDF document text
- http://files.thenewschoolpreschool.com/uploads/1/3/0/7/130739015/paxeninuv_fepigadavibobor_pibone_tegeworoxelina.pdfIn PDF document text
- http://files.sunburstchefandfarmer.com/uploads/1/3/0/8/130814430/3300399.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8896/0919/files/pamereneluz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1021/2518/files/nofitelaxilosowarixexenux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/8824/3864/files/nsfas_application_form_2020_ukzn.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0564/8807/files/nirosaza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1712/3478/files/cdia_mortgage_reporting_guidelines.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8684/7903/files/automatic_star_delta_starter_circuit_diagram.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9139/2664/files/how_to_use_a_pendulum_chart.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8266/9464/files/carrier_psychrometric_chart_si_units.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8583/2096/files/74446349278.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6147/6504/files/diwasirozogegifisuk.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b17c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB17C | 2080 bytes |
SHA-256: 846fa1cdb8362931a481dec2e6c50c827f77b3ff1ebae7e0a505969345466875 |
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font_01_sfnt_off0000bb0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB0F | 4924 bytes |
SHA-256: 01e17561acad3ca5f1cba17b9b49e022f35061b3cfd0fc5d7e95a2a77a8a582d |
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font_02_sfnt_off0000cbc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBC1 | 10420 bytes |
SHA-256: 3777e4be84f14f8716cedd51574795776cf3769227509c8d92d9052254581be4 |
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font_03_sfnt_off0000ef37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF37 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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