MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage, suggesting a phishing or redirection scheme. Although no executable scripts were explicitly found, the PDF structure and embedded URLs are indicative of a malicious document designed to lure users to external, potentially harmful, sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6bef4e90b---89002043401.pdf
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160b99f5028ad4---deviginiwusonok.pdf
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd5d0767b2---sirazit.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160c92aca4b29c---zasazejijawavi.pdf
- http://kasargod.net/uploads/file/8517322634.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/5eb4cf91155211066b6e39336afe4fb4/94991533601.pdf
- https://nnkcreations.com/userfiles/file/87496913435.pdf
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ca3b75274---61972223973.pdf
- http://novichiha.ru/pic/file/zorikejuzog.pdf
- http://fullcolorspandoeken.nl/userfiles/file/80613436.pdf
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1606da723d24e0---furojalanedumef.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3c4638f14---tisosapudopilaxafub.pdf
- http://alemotta.com/resources/original/file/39301128645.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608610d18d5e7---55418248616.pdf
- https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/c657b16cd691c16ff8c97fc916956132/4431445401.pdf
- https://travelstore.tn/userfiles/file/gekusasazerut.pdf
- http://remont-etalon.ru/upload/files/dipogezapejutad.pdf
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c187da2a397---53483665766.pdf
- http://studioagronomoserragiotto.eu/userfiles/files/wosetaxelimobetobag.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d468e88cf---wevejebopa.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5719b932f---fidilogiruxo.pdf
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/3b657ac3af0de749e21bbc7cc6e7c2e3/45605952547.pdf
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c98b1ac8380---papoxofafokawewozawavipan.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=chess+openings+and+counters
- 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_off00010bcd.bin48619074e3ef6b6bd226fdd8b4acab918454c13c3727cbccf1ceb539b1a59ba9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BCD | 16740 bytes |
font_01_sfnt_off000136f6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136F6 | 16792 bytes |
font_02_sfnt_off00014f0d.bin1f25f9bfd84ade6f56cb5884df23dc6d32a3dc58fdc2ca327c4acbc0b9f08640 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F0D | 10876 bytes |
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