MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm or SEO poisoning attack. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be related to educational worksheets, a common lure for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://smidgel.ru/uplcv?utm_term=year+3+adding+and+subtracting+worksheets PDF link annotation
- http://banghetretruc.com/media/ftp/file/bobikozemibulotumeguwu.pdfIn PDF document text
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/244d33afd8a26956b1d7e9c137851266/sefiwukuf.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/bea0db51cfb9af2e980b26c21eadc62e/4584250990.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/318f60be6a085be42cf487d8f2d3e282/sitegoko.pdfIn PDF document text
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/a9msqlij9lj90g137hjvo7k7rd/79823590307.pdfIn PDF document text
- http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735d564fa65---nitemopokutakobiripet.pdfIn PDF document text
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/91ouic45q01lu8neunnhbb1r15/nowelunajimasibezixat.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a92d20a32ca---50478742981.pdfIn PDF document text
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b97c0e78e1e---19894402235.pdfIn PDF document text
- http://anhuicrew.com/upload_fck/file/2021-5-3/20210503014650412320.pdfIn PDF document text
- http://greatnice.club/updatefiles/file/59196714397.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/7c6a5650da69af948eb1fdfbd39cfb34/39908008951.pdfIn PDF document text
- https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/27f7548fe6c48588a01934a4e52074bc/kaliwofemujitujipemav.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/kols76b65fn60eh0g84e5gsl54/pajavowanijololulosijo.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff4840df87---pemowitipomixebijeji.pdfIn PDF document text
- https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/d2mrmcqbofn00vvqnahk562rdl/42492890579.pdfIn PDF document text
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f489c9081---dojisizodalola.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f25be1fa5---55074915759.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE97 | 5588 bytes |
SHA-256: 94f7ca7fdd225fe9545a11e9404b54dd1e15515b0edd235adeb033e3da004bab |
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font_01_sfnt_off0000f1b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1B2 | 10500 bytes |
SHA-256: 160dc1393d05f4037ff9c101f2b4df35690a8348658157184264c7f45ea6a97b |
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