MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model indicated a high probability of maliciousness. Heuristics identified the document as a link farm, with many URLs pointing to compromised WordPress upload directories. The embedded URLs, such as 'https://archism.ru/uplcv?utm_term=the+hunger+games+book+read+online', suggest a lure to potentially malicious content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or redirection campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://archism.ru/uplcv?utm_term=the+hunger+games+book+read+online PDF link annotation
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302193e991a---xatateriwinisimadufe.pdfIn PDF document text
- http://klenderbio.com/upload/files/87310318925.pdfIn PDF document text
- http://nguyenphat.com/public/default/ckeditor/files/kufivarufifexupudab.pdfIn PDF document text
- http://rayanchem.com/d/files/lenusibabesewofesuverej.pdfIn PDF document text
- http://daiduongmetal.com/uploads/ckfinder/files/gaguvebozixamatube.pdfIn PDF document text
- http://bannermaul.com/userData/board/file/19738161387.pdfIn PDF document text
- http://riskhedgetech.com/uploaded/file/20383390306140833fdec7d.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613120c2df455---niwazapojadalelefutoka.pdfIn PDF document text
- https://karlholmbygg.se/UserFiles/files/5594646634.pdfIn PDF document text
- https://natyabio.com/uploadfiles/toxepojo.pdfIn PDF document text
- http://jplus-ag.com/upload/files/BodyFile__613A849BAF334.pdfIn PDF document text
- http://aquamedia.cn/ckfinder/userfiles/files/jisozerexivesevubaxu.pdfIn PDF document text
- https://bacninhonline.com/webroot/img/files/filotalawiwinedaduras.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614182da831f5---7353589602.pdfIn PDF document text
- https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/gelufewovuvulosafedilir.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/b002661c556d5512208db6f9d12199b3/dizedolalegevuroduma.pdfIn PDF document text
- http://ensky-chemical.com/upload/files/wilitulediw.pdfIn PDF document text
- https://xn--z4qq44i.tw/upload/actfiles/51849351995.pdfIn PDF document text
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/386ba0679d41226996677216bfbc45ee/dunazemojanurubovigesij.pdfIn PDF document text
- https://jv-cms.crazy-jessie.nl/uploads/files/mimubiwidofu.pdfIn PDF document text
- https://holycrosshealthcare.com/userfiles/files/90995719937.pdfIn PDF document text
- http://annamsaigonlaw.com/upload/files/90954117301.pdfIn PDF document text
- http://debten.net/UserFiles/File/86741316522.pdfIn PDF document text
- http://drivingtesttips.ie/fckeditor/userfiles/file/53211821849.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d751.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD751 | 10892 bytes |
SHA-256: 75051333a42d5775cd22e6c324076a4963f3b8b9f3f342643db32bef3419c1d1 |
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font_01_sfnt_off0000f00a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF00A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001081c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1081C | 17480 bytes |
SHA-256: 55023980033e0570b48fed40d93f0d8e6c1f034068209ffe6fcd665bcbb82bf7 |
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