MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The primary URL, https://pelibifir.ru/award?keyword=equilibrio+definicion+pdf, is likely part of this scheme. No scripts were extracted, but the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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External URI info PDF_URIPDF contains an external URL action
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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://pelibifir.ru/award?keyword=equilibrio+definicion+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421460/normal_601afd2ce8fd5.pdfIn PDF document text
- http://xsafak.com/sennheiser_hdr_170_user_manuali06yr.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465941/normal_5fd0b95c31559.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500889/normal_60450f225020d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427268/normal_603e891519b9a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473322/normal_601aa8b36788a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494874/normal_5ff0bf8e57c33.pdfIn PDF document text
- http://ihsteam.ru/allen_ginsberg_reads_howl_and_other_poemsngm6q.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388614/normal_5fe10ab2f29e7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460980/normal_60208eb9a5962.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/nevovumowa/what_is_clr_in_asp_net_c.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/057d0313-05dd-434c-9270-a4f38ae6daf9/govefetoxitasakupusub.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/806f13ce-6b77-4b9f-a83c-de5a31baeef5/visualization_analysis_and_design_download.pdfIn PDF document text
- https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_dc8f94bc158043aa86f82d9447559a54.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dupula/zesazukozixazakafuwejag.pdfIn PDF document text
- https://s3.amazonaws.com/xijalovelokolep/godzilla_tamil_movies_hd_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c07ca1cc-3894-45ee-8804-739875f2c6b3/da_jesus_book_translation.pdfIn PDF document text
- https://s3.amazonaws.com/xaliwalufoguni/neriteb.pdfIn PDF document text
- https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_c05c156782d24b9c9599497d501dfb88.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/5d781856-1f8b-4398-a771-883c6a3e18c5/kidifolo.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_off0000e557.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE557 | 4984 bytes |
SHA-256: 4e86406bc6069287546a9682ac04e223c8e6bdf958034cda5be0a5acd71c5c35 |
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font_01_sfnt_off0000f657.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF657 | 10872 bytes |
SHA-256: ae000e15539efd81791c70c7f9b75d194b360901c65c46fdcfadfd0ec94f4271 |
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