MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external resources, including a malicious redirector at 'https://ttraff.ru/wb?keyword=has%20been%20have%20been%20had%20been%20exercises%20pdf'. This suggests the document is part of an SEO poisoning or phishing campaign designed to redirect users to malicious sites. 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/wb?keyword=has%20been%20have%20been%20had%20been%20exercises%20pdf In PDF document text
- http://files.artvallein.com/uploads/1/3/1/4/131409385/1895327.pdfIn PDF document text
- http://lijuto.concordneuropsych.com/uploads/1/3/2/7/132740405/lojidigodeze_kuripaxemesep.pdfIn PDF document text
- http://files.chloelabart.com/uploads/1/3/2/6/132681660/ruvazajikafu_nokegogekuw_zogubujaw.pdfIn 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/xekosipavejidowusa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5453/8658/files/mofiziparapopifag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/6043/9713/files/convertir_de_a_word_editable_sin_perder_formato_gratis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7242/9980/files/sazidatupujeba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xamunodobesezuwenetubaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8065/5775/files/daxuduwodafotoloziv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7140/5222/files/instant_notes_genetics_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3067/4597/files/pabazetapapabuwelobowukiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0971/2021/files/kb_mb_gb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3591/7464/files/bogivubuvakogumenibasofa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5747/8823/files/75172280774.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7005/4805/files/jimoxudonetamafux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4934/4421/files/nabajuxid.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_off00005a54.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A54 | 5036 bytes |
SHA-256: 8f63f9c6bbe197c75f4e7768f6a3f2479c65205c280e94d6dfc25c0a3c380807 |
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font_01_sfnt_off00006b58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B58 | 9840 bytes |
SHA-256: 2b21b6e996b93304f34064047cf06f427ed00f392a54a6d5bd237d3044991c8c |
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font_02_sfnt_off00008d17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D17 | 4324 bytes |
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd |
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