MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits characteristics of a phishing lure, specifically designed to trick users into clicking on links that lead to further downloads. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' indicate a mass of external links, with one prominent redirector URL pointing to a site offering 'niccolo machiavelli books free'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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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://xajibur.ru/123?utm_term=niccolo+machiavelli+books+free PDF link annotation
- https://static.s123-cdn-static.com/uploads/4454286/normal_6007eb425b00b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367311/normal_601185b29d6b9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4475383/normal_5ffb0837dc508.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385850/normal_6012255f6b6b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393204/normal_603c5444dc32d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452206/normal_602857d8722b5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486971/normal_6040b94d23cb8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421944/normal_6029e9189d30c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369651/normal_5feaf05abe3b7.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/xiwevitox/blister_in_the_sun_guitar_tab.pdfIn PDF document text
- https://b3079848-b07e-4d89-9244-05dfa5dd91fe.filesusr.com/ugd/3ab5ed_fb386f52161742c1b807bdf923111041.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jukoxisojow/avatar_movie_in_tamil_language.pdfIn PDF document text
- https://s3.amazonaws.com/novifamigot/honeywell_chronotherm_iii_reset.pdfIn PDF document text
- https://s3.amazonaws.com/fulazelof/sadavexanegefatefomo.pdfIn PDF document text
- https://s3.amazonaws.com/roxawo/50963413258.pdfIn PDF document text
- https://s3.amazonaws.com/zidosozawok/consultant_agreement_template.pdfIn PDF document text
- https://s3.amazonaws.com/kifutizijebuj/jebalogukuwuruj.pdfIn PDF document text
- https://s3.amazonaws.com/gedimuta/65326701145.pdfIn PDF document text
- https://87da31d5-d184-45e7-a456-0ad082c8bd65.filesusr.com/ugd/55e94a_8c03acab742645da91da60682dae0978.pdf?index=trueIn PDF document text
- https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_5211055d2f1445d1a2a7a6eef8516e35.pdf?index=trueIn PDF document text
- https://8d90b851-447f-4cfc-ac95-1e867b71b983.filesusr.com/ugd/b371d9_ea23048dd3224bc4a84a41dca06284eb.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_off0000df9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF9D | 5352 bytes |
SHA-256: 272fb777ae6f38d6bc80f149ea99cd342371dd94a274258f7349721b34231257 |
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font_01_sfnt_off0000f1b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1B7 | 10960 bytes |
SHA-256: 32d66fe704f98ed3d123dcdb54d997d8edcc31286f6937e7b2d2634e31fe5845 |
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