MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external resources, many of which point to redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a high likelihood of this document being used for malicious purposes, such as phishing or malware distribution. The embedded URL 'https://cctraff.ru/123?keyword=hmh+algebra+2+answers' is a primary indicator of this malicious activity.
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://cctraff.ru/123?keyword=hmh+algebra+2+answers In PDF document text
- https://cdn-cms.f-static.net/uploads/4402951/normal_5f93eaadc63c4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370263/normal_5f92cda0bf71a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383798/normal_5f9349a030019.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366989/normal_5f97546c2abf8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382186/normal_5f9091a4363d2.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/8badebfa-2f06-4817-9488-5f67888afd77/xominin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/7374/4277/files/exploratory_data_analysis_in_python.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/2009/7980/files/magoosh_gre_words.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/7962/1536/files/poco_pesante_music_definition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0492/2844/7900/files/dd_3.5_handbook_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/edfed3fb-7f06-4fb9-a6d1-9d047baa5105/feteme.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a913d450-d5c0-4a59-89b3-4bdf00550762/letanefokogirodamis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c8068a12-3a2a-45ff-8049-a93bbdf77125/83257192652.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0495/4721/5000/files/23355877031.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/1863/1337/files/realidades_2_capitulo_4b-1_guided_practice_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1734/7487/files/wotlk_paladin_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3960/3360/files/mexir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0457/6103/6444/files/beauty_and_the_beast_prologue_guitar_tab.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_off0000861f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x861F | 5424 bytes |
SHA-256: ae3aa0fe964ea84504fad13e4274744c6adcdf76fb475afc663036bd678c642a |
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font_01_sfnt_off00009879.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9879 | 12272 bytes |
SHA-256: 5bc35bfb79ab1888877e211f7b5c0678d18588e256817804bfd98abe2244f8d0 |
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