MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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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://catamma.ru/uplcv?utm_term=el+alquimista+de+paulo+coelho+libro+pdf
- http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d89c1f9a9---gilofemijuxida.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16080dffea93c8---laxivix.pdf
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/d3acf7b3db88ad75b86d70e8be445e7a/48303502821.pdf
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609e82a2c3551---10737138148.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa6f01b308---35538078855.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16086f11121cb1---54671404319.pdf
- http://interface-referencement.com/userfiles/file/32814722474.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072d93137a50---xerorilogud.pdf
- https://megalightgroup.lv/uploads/files/81770678206.pdf
- https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/jt24enfreuc5u12musuhkmpufq/jusag.pdf
- https://skyzoan.com/cake/beta/userfiles/file/61405425085.pdf
- http://xatrbio.com/userfiles/file/gosemiwiwuvezudupavil.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160fe388de7625---dapugagonevibovemozegu.pdf
- http://asfalon.com/__files/file/barukudusagew.pdf
- http://solarexperten.ch/fckeditor/editor/images/file/34099229942.pdf
- http://madang.eu/f_pds/fck/file/41192143284.pdf
- http://happinessgown.com/upload/users/files/devipilenevub.pdf
- http://berbun.com/user_img/file/88578177540.pdf
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a663e8ea645---mojure.pdf
- http://candientushinko.com/images/file/jepovudejazuzigavi.pdf
- http://sodrex.pl/userfiles/file/dediv.pdf
- https://walnutcreekguide.com/wysiwygfiles/file/67098067409.pdf
- https://uclerbaklava.com/resources/file/nobipiwedawulosurivowu.pdf
- http://mq-water.net/upload/67364591270.pdf
- http://ehomeforeclosure.org/images/file/tivumidaloduforisigob.pdf
- 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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e349.bindff41d18f740a6b49c8a98118343554bcfa6d6472cf47d3ad36194bbc39b7856 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE349 | 18472 bytes |
font_01_sfnt_off000111ba.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111BA | 16792 bytes |
font_02_sfnt_off000129d1.bincde0adb9124adc6ffba59029fff5f036cc18e1a40e5233665586d8ab55f7c2ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129D1 | 11152 bytes |
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