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 redirector infrastructure. The primary redirector URL, 'https://cctraff.ru/strik?keyword=pimsleur+japanese+free+download', suggests a lure for free downloads, likely leading to phishing or malware. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm its nature as a malicious redirector and link farm.
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/strik?keyword=pimsleur+japanese+free+download In PDF document text
- https://cdn-cms.f-static.net/uploads/4366652/normal_5f875aab3950b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379370/normal_5f8f624e39faa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367912/normal_5f8fec0cb0a6e.pdfIn PDF document text
- https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
- https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/sesupu-xozuludofivepur-vebuba.pdfIn PDF document text
- https://veforolafumokiv.weebly.com/uploads/1/3/4/3/134340642/rasosarovenatakijej.pdfIn PDF document text
- https://rigonabex.weebly.com/uploads/1/3/1/4/131483185/223756.pdfIn PDF document text
- https://varipejat.weebly.com/uploads/1/3/0/7/130739080/8b10f69311.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fomaralunex/dedazogidurotir.pdfIn PDF document text
- https://s3.amazonaws.com/besafefaf/mind_the_gap_physical_science_grade_12_download_chemistry.pdfIn PDF document text
- https://s3.amazonaws.com/nonipesikiri/13292027849.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/lomusupap.pdfIn PDF document text
- https://s3.amazonaws.com/subud/advocates_remuneration_order_2014_kenya.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/72322de5-370a-4cb0-bb3f-da0134bbfa08/vedic_palmistry_hast_rekha_shastra.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/27c6572b-00dd-4dec-ab79-a6d6969bc735/peter_pan_la_gran_aventura_pelicula_completa_en_espaol_latino.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4912e04c-1000-4049-ad3e-75e5a281ed83/31937166388.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/les_analyses_biologiques.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/60925998089.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_off00005ac2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5AC2 | 6588 bytes |
SHA-256: 66c418916d4dc1ae62a30825333c8ce312a3f0850899b40a808f199caa771a06 |
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font_01_sfnt_off0000712d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x712D | 5356 bytes |
SHA-256: e8798eda588cb92b53190bd88285a71e67c0c363ddf0720e5b48a74dd7d6774f |
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font_02_sfnt_off0000835b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x835B | 11204 bytes |
SHA-256: 481330005f320813ffc1eb4412e8f5c8840e531bdc42d12694ab52e58026d5b0 |
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