MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, indicating it functions as a link farm. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest this is a tactic to distribute traffic to potentially malicious sites. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score point towards a phishing or malware distribution attempt.
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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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://xajibur.ru/award?keyword=mini+amplifier+circuit+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4424683/normal_5fea10bbe8888.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4493916/normal_60490dcee3ffa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4423136/normal_5ff6bea38d2c9.pdfIn PDF document text
- http://fapenas.22web.org/beginners_guide_to_digital_painting_in_photoshop_vol_1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/fd285e3d-3697-4712-a347-5c2215337ff3/pakowu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/50b072c8-1c0c-4679-b6e9-9b0cdf7a3ade/gijeginimunebemule.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a6b30327-812b-4240-979d-a12fa4918d04/2006_chevrolet_malibu_maxx.pdfIn PDF document text
- https://s3.amazonaws.com/selivuvumepaveb/28603956695.pdfIn PDF document text
- http://taxifegizuni.epizy.com/99548798027.pdfIn PDF document text
- https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_c31013b93b0e4250a27b2590b23ce54e.pdf?index=trueIn PDF document text
- https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_f2254f390b374630816c6c6bb81039db.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3abe6785-11d1-42c3-bcf0-8f52281b51c8/92104444852.pdfIn PDF document text
- http://toledufebemal.rf.gd/exercise_physiology_textbook.pdfIn PDF document text
- https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_5dd3fe84fde94ab789ea29ee61a003e6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/66dfe72b-1de1-460b-b17b-88f157b66214/vuxurozufivijisi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/84fff675-c20c-4226-bd94-1c98ee50bdf7/in_the_mood_lyrics_24kgoldn.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87cf0751-7614-4c1a-8a7f-b718fda98b57/godumojejuxipole.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95323593-59de-4690-b7c5-c269dad5d009/daily_reading_comprehension_grade_5_free.pdfIn PDF document text
- https://s3.amazonaws.com/rewepalazamiso/17162976473.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_off0000f16a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF16A | 5128 bytes |
SHA-256: 7e562e5631fdd8c42c1d7c575f6fc8cdb9a65f05945c4206d249cf96e06630c8 |
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font_01_sfnt_off000102d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102D1 | 10692 bytes |
SHA-256: 1e1b75aa72065683d66b7764b0791823a8e7d6f6c3cf89a0cc0383e12e37c21b |
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