MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service (cctraff.ru) known for malicious activity. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm designed to attract users through search engines. This suggests the primary goal is to redirect users to malicious sites, likely for phishing or malware distribution.
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/aws?keyword=adverb+of+frequency+lesson+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4368788/normal_5f87d7fd19ce4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372076/normal_5f8d090a97298.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368492/normal_5f96e1e64df9a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392215/normal_5f90e91b6fd1e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386822/normal_5f90595f00f52.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365553/normal_5f89f35131776.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/1/0499/6091/1016/files/sterility_testing_of_pharmaceuticals.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/7488/2198/files/create_your_own_stained_glass_window_math_project.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/1789/1750/files/wizewejub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/4730/3359/files/5900476044.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6035/3429/files/kofamokanolej.pdfIn PDF document text
- https://s3.amazonaws.com/fatisake/tazavajuzizerotisobisuwu.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/amazon_e_commerce_case_study.pdfIn PDF document text
- https://s3.amazonaws.com/dumupa/artist_management_toolkit.pdfIn PDF document text
- https://s3.amazonaws.com/subud/2_branches_of_economics.pdfIn PDF document text
- https://s3.amazonaws.com/fopalew/process_of_language_acquisition.pdfIn PDF document text
- https://s3.amazonaws.com/zirojopemup/zamobovupuva.pdfIn PDF document text
- https://s3.amazonaws.com/pevuwarobuvowa/dodevugagalanaxur.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_off000074f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74F0 | 5112 bytes |
SHA-256: 69e5f42c6ae5be25144df9c544f9a2c5df7bece6bad1271048049d49d29c912b |
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font_01_sfnt_off0000865f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x865F | 11128 bytes |
SHA-256: 592a5a50a7dde62bf9daaab4a7cab25c01891731d2430bd9f10f61054cd7201b |
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font_02_sfnt_off0000ac47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC47 | 4324 bytes |
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
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