MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting a malicious site by presenting it as a PDF download.
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=descargar%20cuestionario%20clase%20b%20pdf In PDF document text
- http://files.new-model-tours.com/uploads/1/3/0/8/130874085/1868684.pdfIn PDF document text
- http://files.mgracetransitions.com/uploads/1/3/2/6/132683088/nuvoxufamesas.pdfIn PDF document text
- http://files.pathrochestermn.net/uploads/1/3/1/1/131164054/ee19c78995.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/1/0438/1288/0541/files/poemas_fernando_pessoa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7546/0515/files/app_inventor_2_advanced_concepts.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5808/6559/files/vajafik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6737/4758/files/lopapisu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7529/6670/files/70477848919.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3458/1911/files/attack_on_titan_season_2_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0934/2621/files/dewoluwewugupebepawefad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3262/5831/files/kaiji_ultimate_survivor_episode_1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0558/3266/files/carbohydrates_ppt.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1635/4978/files/schooled_full_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2095/1450/files/94696820140.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_off00005831.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5831 | 5344 bytes |
SHA-256: ae967d864ad747bb710d2f6fa322c8e2b9d666141ce3d81f05a0ecd0cee481b4 |
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font_01_sfnt_off00006a5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A5C | 1936 bytes |
SHA-256: 246569b5fd7226bd0ebf3c016de7ba0bf82e996896d660a08030b2af0a08efd3 |
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font_02_sfnt_off0000739d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x739D | 10648 bytes |
SHA-256: 2d21afa5fb3d3c8ee5ecf8bc3ad2935515e918ff8c77b5e35e45397a4130cdfb |
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font_03_sfnt_off00009612.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9612 | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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