MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to host malicious content. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=carbohydrates+notes+pdf`. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure.
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=carbohydrates+notes+pdf In PDF document text
- http://bizolowu.abstractartandyoga.com/uploads/1/3/1/3/131380600/6757426.pdfIn PDF document text
- http://files.schroederarch.com/uploads/1/3/0/7/130776249/1b823713566346.pdfIn PDF document text
- http://vasus.doskinstudio.com/uploads/1/3/0/8/130814328/jovilexuparu_zewobapepakofoj_kapibuzod.pdfIn PDF document text
- http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdfIn PDF document text
- http://files.hunterdonchurch.org/uploads/1/3/0/8/130813108/vinedexagajivolem.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/1/0451/1321/3093/files/weathering_erosion_and_deposition_worksheet_answer_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1425/7815/files/87682361614.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/8162/4739/files/clinical_anaesthesia_barash.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9199/2480/files/bagejukuxijibi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5086/8646/files/poxifotabomatetilajolaro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4583/8239/files/67820674670.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2473/6678/files/68425107697.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2642/3701/files/79144166654.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6951/3632/files/xumojewok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6743/1320/files/mawuwefumivijizabuke.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6296/0023/files/rozurowogutagu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7113/4106/files/textbook_of_biochemistry_by_vasudevan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.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_off00007a28.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A28 | 5244 bytes |
SHA-256: 3f84e2db023f00876689a782a3463a72a7811bf62c386b12a18aa45d8e1d35c5 |
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font_01_sfnt_off00008bf8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8BF8 | 10364 bytes |
SHA-256: db7441f4819b5695ffb7b1e4b5bfbf932a82a1639555e4f0067be09cf67098f4 |
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