MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify and other domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains references to academic topics and the URLs suggest a lure to download PDF files, likely to disguise malicious redirection. The primary intent appears to be directing users to malicious or spam content through a deceptive link farm.
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=upsc+mains+anthropology+syllabus+pdf+download In PDF document text
- http://files.ocatilloaudiovisual.com/uploads/1/3/0/8/130874359/lokodesobe.pdfIn PDF document text
- http://files.406cavoodles.com/uploads/1/3/0/8/130874655/zilazokojixafa.pdfIn PDF document text
- http://files.goallpros.com/uploads/1/3/2/3/132302749/benonaselune-mevafifuwexam-vujapi-xujibu.pdfIn PDF document text
- http://files.promisegarden.com/uploads/1/3/0/7/130775402/683d788f.pdfIn PDF document text
- http://fexuf.isawiitch.com/uploads/1/3/1/1/131164243/gagixaset-fepumowe-janiwitifutuwiw-pabexu.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/1/0430/6855/5415/files/77503356031.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5745/3985/files/inversiones_bursatiles.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3341/9160/files/bais_yaakov_cookbook.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0156/0737/files/lamugaruso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9158/2357/files/brokeback_mountain_screenplay.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4283/1522/files/7547518037.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3731/9590/files/33550220067.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1447/1330/files/a_question_of_power_bessie_head_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7465/8216/files/xaxivenit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5143/4652/files/asme_y14_5m_1994_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2875/0234/files/wipavetekikaguxikaju.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_off00006d89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D89 | 5896 bytes |
SHA-256: db6fe004598d2b9b183e8580865803b8498e3abe7f366b8463073317d1835866 |
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font_01_sfnt_off0000817c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x817C | 12128 bytes |
SHA-256: 5ae0e13d986578489dc0d1069901dbdae8d3ab78ce56378491c2253f48ad1919 |
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font_02_sfnt_off0000aa04.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA04 | 16064 bytes |
SHA-256: 811776956d0b1f89c09bcbfbcda3f036884cdce0b7857604712f2e3f276a6025 |
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