MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous external URIs, with a primary suspicious URL being https://jacksth.ru/wix?keyword=subordinate+conjunctions+worksheet+ks2. The document body, though heavily obfuscated, suggests a lure related to educational content ('subordinate conjunctions worksheet ks2'). The presence of embedded URLs and the overall structure indicate an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 5
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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 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://jacksth.ru/wix?keyword=subordinate+conjunctions+worksheet+ks2 PDF link annotation
- http://werenntaq.online/dan_brown_books_about_robert_langdon67l47.pdfIn PDF document text
- http://betmoy57.com/nosujegewisodubebazanis4gh4m.pdfIn PDF document text
- http://dexaputanit.mygamesonline.org/the_breakfast_club_movie_script.pdfIn PDF document text
- http://moitender.org/tr_movies_tamil_dubbed_movie32m16.pdfIn PDF document text
- http://elinekici.online/how_to_install_first_alert_smoke_and_carbon_monoxide_detector65mu7.pdfIn PDF document text
- http://lefibipefazefep.mypressonline.com/gewakusidorakowexigoteba.pdfIn PDF document text
- http://sevowina.medianewsonline.com/how_to_draw_a_realistic_tree_step_by_step_easy.pdfIn PDF document text
- http://rojibitakuvekuw.scienceontheweb.net/bowofotelijetozosirur.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/19547c58-d7a8-4b8b-a060-6c9bb2da4a13/how_to_dry_roast_peanuts.pdfIn PDF document text
- https://s3.amazonaws.com/xufoxorog/bleach_vs_naruto_2._6_for_pc.pdfIn PDF document text
- https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_6b44accfd7884ce49f978640e1911211.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/davawina/93523037095.pdfIn PDF document text
- https://s3.amazonaws.com/jixeremipet/truyn_kiu_thnh_phim.pdfIn PDF document text
- https://s3.amazonaws.com/ninasivol/lazomapexelebab.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7e096da7-0104-456b-aaf9-3ae368546bd2/zufisomi.pdfIn PDF document text
- https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_a51997e70e9a40099afbac47319f51b7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dekogamik/hernia_society_guidelines.pdfIn PDF document text
- https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_cab35e9f158d4f539623954be9eae672.pdf?index=trueIn PDF document text
- https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_b9b6ca518a5f42deb8efc0ce2b598199.pdf?index=trueIn PDF document text
- https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_1a62d1d15b2f440290ca5aea4bd3eec7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/85a8b7c4-b1c0-4102-862c-12510ce7c15e/pride_and_prejudice_film_watch_online_free.pdfIn PDF document text
- https://8dfdba76-182f-4dc4-9dda-37a8c8d09dc9.filesusr.com/ugd/4ae4db_46343b232340422b87f1f867240b4a1a.pdf?index=trueIn PDF document text
- https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_0cb0b139498c4d6b9a3b9a32c52e99b4.pdf?index=trueIn PDF document text
- http://womidelere.myartsonline.com/bethesda_handbook_clinical_oncology.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_off0000e1ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1FF | 5600 bytes |
SHA-256: 43f68f8d204d72fccfa71aeed51e63bcf82bbc5a0feaeecfd597e6f9210ca673 |
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font_01_sfnt_off0000f516.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF516 | 10312 bytes |
SHA-256: 1740fe9d158739ffb27aac9af6605ce217e7550d1a494301575603ef8f12ac78 |
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