MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many pointing to disposable hosting, and one critical link to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Kubernetes interview questions'. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://yafferge.ru/award?keyword=kubernetes+interview+questions+and+answers+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4500199/normal_601e8e6b31184.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4412758/normal_5ffa069944437.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377407/normal_6015bd8da8ce2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381738/normal_6021a7eb2a349.pdfIn PDF document text
- http://cadenalia.com/91174231866hrim5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409107/normal_60012e6d2e17d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385009/normal_60263d0718d37.pdfIn PDF document text
- http://tesocoin.online/49737621772aq6lz.pdfIn PDF document text
- http://govazibibili.22web.org/52517740425.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426422/normal_60312c7f9abcd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454694/normal_60233678191e7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_2a25746269d14e4085794fd4292de176.pdf?index=trueIn PDF document text
- http://jowatazurusu.epizy.com/whats_the_interior_angle_of_a_12_sided_polygon.pdfIn PDF document text
- https://f84ffea9-2755-49c2-9cb5-47ca8b55fe65.filesusr.com/ugd/0adedf_a16045653f9f4db58c8bbab65c99ed47.pdf?index=trueIn PDF document text
- http://ratazudawi.epizy.com/alpine_linux_apk_bash.pdfIn PDF document text
- https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_0383236de4bb464f81a85a179c6b918b.pdf?index=trueIn PDF document text
- https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_1f6fa8e3f05d4782815fac73a075a763.pdf?index=trueIn PDF document text
- http://sidiwen.epizy.com/aranjuez_concierto_score.pdfIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_f84e378192ea49d2aebc3272e1245530.pdf?index=trueIn PDF document text
- https://a9f3490c-def6-45ea-9957-aefa341d54bd.filesusr.com/ugd/84b587_9b99a63060d745c09aa62cc4393f45dc.pdf?index=trueIn 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_off0000fd31.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD31 | 5392 bytes |
SHA-256: d71dc526b9428b66c73ea516ed8314953a894c9204eb0e1a8678456be2cacb25 |
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font_01_sfnt_off00010fa5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FA5 | 10592 bytes |
SHA-256: 5ac611340b99a8aa747ddd373e09044bd58319204ddc902bb3617bbf05a3200e |
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