MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is a PDF that contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The document body, though heavily obfuscated, suggests a lure related to educational worksheets. The presence of multiple compromised CMS upload links and a link farm on disposable hosting indicates a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.
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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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://laborke.ru/uplcv?utm_term=grade+2+math+worksheets+addition+regrouping
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/o1ngkd8gsubmu1p7t2bvdkq7d2/52170280958.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090ebdadbe28---bexaselemadugugefapeg.pdf
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaaabf04e1---sapabikuwu.pdf
- https://arerp.kr/data/file/%5C/72706088830.pdf
- http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/6tph46muo55qnj4fut54gol4r3/zumovujijagerelajaki.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095411f9b284---wimudaze.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0abbc1884---pesuzefefuruzivinenone.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/654431315ee4f4377771e46a662383cf/33937705424.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5bb5d0475---zazegadaburapulo.pdf
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924298ddd08---93466716641.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/86iahhg4io5bbd6vhdfbjhkinf/finoxilelibenanolonosuxab.pdf
- https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/dadapozalosewuvasenowun.pdf
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b718e0dbc68---zoralunavozubiton.pdf
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/ddf450b6de1e9677c5cb2d436d018d37/jusijifezator.pdf
- https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/e5f8ceb3075a278612f0aafbb4f588cb/dujubokavijobesiritutuz.pdf
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/a3f4760a0b1b929aa620790cd4789707/pojozegudawujasiwosu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cf1e.bin3661cadba9a4f19c41342eeadf63539df47e89ed8806b7be9406dd0d0ae3c133 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF1E | 5660 bytes |
font_01_sfnt_off0000e24b.bin6d54079d2ee7900788ca985d941603657778f5a9b1dd887120ab44e337aca38e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE24B | 10196 bytes |
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