MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a PDF link farm and an SEO redirector suggests a phishing or scam operation designed to trick users into downloading further malicious content. The embedded URLs, particularly the one pointing to 'jacksth.ru', are likely part of this lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9931
Heuristics 7
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PRC/3D content in PDF medium PDF_PRC_3DPDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
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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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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://jacksth.ru/123?utm_term=busy+works+beats+music+theory+free PDF link annotation
- http://funasowuto.getenjoyment.net/28969376235.pdfIn PDF document text
- http://rozujed.sportsontheweb.net/juwofelefumulixum.pdfIn PDF document text
- http://pejelurim.getenjoyment.net/65288693626.pdfIn PDF document text
- http://xeratigike.medianewsonline.com/balancing_chemical_equations_worksheet_answers.pdfIn PDF document text
- http://femetorisufi.sportsontheweb.net/62434510362.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://27475d5a-2981-497d-8cd5-0c310ef10f8b.filesusr.com/ugd/9cb927_62f246f0bc7945c8b2a3d3accec6073e.pdf?index=trueIn PDF document text
- https://528f6e5c-6927-42ef-b7a5-a8f9c349750c.filesusr.com/ugd/07b979_b1d456514d954d32a75d4bc1622d15a8.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/a12a6602-bf0b-4939-bedb-8dbf847b7f2c/90704820643.pdfIn PDF document text
- https://f50ece36-1901-4a7b-9396-968a400df7f4.filesusr.com/ugd/3ecb95_51cce284f7c14f5b89ba878acf143f16.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tetofamuxulil/54022836248.pdfIn PDF document text
- https://s3.amazonaws.com/vufuzewasi/dumigomapunudoxita.pdfIn PDF document text
- https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_9ff2c75da3c047a5a29abec27f869603.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gezizefefififa/jenafilut.pdfIn PDF document text
- https://s3.amazonaws.com/garorowa/checkpoint_datasheet_5900.pdfIn PDF document text
- https://s3.amazonaws.com/wupagivoz/sasitefudutedezigosixebe.pdfIn PDF document text
- https://s3.amazonaws.com/dazinibonofobi/craftsman_10_laser_trac_radial_arm_saw_manual.pdfIn PDF document text
- https://f62823ea-e863-4eb7-bd7c-e3bac0139ff1.filesusr.com/ugd/8c639a_845da7d5903a43849bf040cf71394a9e.pdf?index=trueIn PDF document text
- https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_8b94a6751542452992a3649243119b6c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c159a9cd-6cd0-49e4-9707-5fdfc68b0734/sex_and_the_city_season_2_finale.pdfIn PDF document text
- https://s3.amazonaws.com/befafuni/13255054066.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4264d918-961e-4d3c-8ed0-05db1fda1362/model_3_price_cut_uk.pdfIn PDF document text
- https://s3.amazonaws.com/kegubinefuda/you_ll_be_back_piano_sheet_music.pdfIn PDF document text
- https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_0633a5ddedef4ee7946f82f1e134bd5e.pdf?index=trueIn PDF document text
- https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_94813188b3e848e5a002442d7e5977c9.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/f0eac928-5e9a-4680-959e-6c955943fc31/08_dodge_avenger_tire_size.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/39a1a30a-7474-4925-b1fa-4173584b08cb/gajigix.pdfIn PDF document text
- https://s3.amazonaws.com/mexesazaxasa/does_dollar_general_pay_holiday_pay_for_new_years_day.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_off00014661.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14661 | 5312 bytes |
SHA-256: e13f881d9ee5b0cbe2353310dfb123f5e888d7eaacf49ad3dfccbd2ac23f7b8f |
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font_01_sfnt_off0001588f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1588F | 11168 bytes |
SHA-256: 80598c5c0b7ca62572f2f8c6e0c0dfcce67f23311814cb5698e9f3d79a65538f |
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font_02_sfnt_off00017eac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17EAC | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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