MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to numerous external URLs, many hosted on compromised WordPress sites. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM firings suggests an attempt to obscure the true malicious destination by distributing links across disposable hosting. No scripts were extracted from this sample.
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 https://chcial.ru/uplcv?utm_term=what+is+a+housing+estate PDF link annotation
- http://centreforeffectivecoaching.com/media/file/73977531237.pdfIn PDF document text
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/o5oht23kdt396q2lvdf5povb0n/pavobod.pdfIn PDF document text
- http://studioturina.com/userfiles/files/25256924236.pdfIn PDF document text
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/a9fd61cca7b5370e795fbf89f5ad01cf/17155725394.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/89ba3c5383d6c41675a1f5f17459bd60/zupovajugojukag.pdfIn PDF document text
- http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee31c49ecc---lenipotusuxilixap.pdfIn PDF document text
- http://0-50.ru/userfiles/file/rimoxaxekikogir.pdfIn PDF document text
- https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/m2s8lfjuohea1inc1rnhmvtlh3/15345666263.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c97e86d222---nulex.pdfIn PDF document text
- http://mikomisushiwc.com/uploads/files/93152000622.pdfIn PDF document text
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/o7t08brss6uvpllekdtpc77but/vivufisufege.pdfIn PDF document text
- http://linkipt.com/_UploadEditor/files/totoxibufijugos.pdfIn PDF document text
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ba4d9b678---55059107628.pdfIn PDF document text
- http://pphu-joanna.pl/fckpliki/file/92585384793.pdfIn PDF document text
- https://activepymes.com/pub/file/gabudufuzuwi.pdfIn PDF document text
- https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/bf5iathjvth66vcs179p4qvhg9/21123448451.pdfIn PDF document text
- http://ctyrkolky-gamax.cz/data/dokumenty/16248399740.pdfIn PDF document text
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/4b3ea1466aabdc55d7960fee446c8de4/84028067028.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b724079b01---44681252024.pdfIn PDF document text
- https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/3541911f3df746b2137549e70226ab28/vuwireno.pdfIn PDF document text
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/504tj98ipsrnnkjpcbre87vabj/siten.pdfIn PDF document text
- http://namlongprojects.com/images/uploads/files/gejobelorujexozufulogala.pdfIn PDF document text
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/1l3tni4gh5afoosp0h0mjkpj21/wedivexaforadolepiva.pdfIn PDF document text
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c401bdd0e7---marejutawovexerawide.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_off0000fbdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBDC | 16652 bytes |
SHA-256: a260eea7949356fe528c567472bbe92e4425f76aa4f1ac271a145f94496c232c |
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font_01_sfnt_off0001271c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1271C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013f33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F33 | 10332 bytes |
SHA-256: fa53eb48e56313abab4b93f064a0c13ffdd448cd938ea87ede8eb23719a2da89 |
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