PDF malware analysis — malicious · d2e911932f302e89

MALICIOUS

PDF

82.2 KB Created: 2021-09-15 06:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: fa69d92a135681e435b15eb0e51bef1c SHA-1: 86f7651a501e8c557b1b6cdbbf6642eb3b910368 SHA-256: d2e911932f302e89e956a1e5a6b1c17923eb4f4981dfd2a920e6cce301d18e23

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of a link farm on disposable hosting and links to compromised CMS upload directories further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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=level+18+cannon+cart PDF link annotation
- http://omatsuri.kr/data/userfiles/files/50514014416.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161412570afaa8---raxipovunulifidebigax.pdfIn PDF document text
- https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613da84f7a1ac---suzulumuxufiwoje.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161414f65b835d---vokugapadurubevol.pdfIn PDF document text
- https://hkfew.org.hk/ckfinder/userfiles/files/vabipuxiruvidipexorewesoj.pdfIn PDF document text
- https://mariellatriolo.it/public/file/vesemisutolajosapuz.pdfIn PDF document text
- http://inimtrento.it/userfiles/files/selob.pdfIn PDF document text
- http://azizavacanze.com/userfiles/files/56825757873.pdfIn PDF document text
- http://www.coverseg.com/uploads/ckfinder/files/mezefajamupari.pdfIn PDF document text
- https://acavacecio.it/userfiles/files/83260314020.pdfIn PDF document text
- https://sintasyapi.com/img/userfiles/file/95151895785.pdfIn PDF document text
- http://hockeydh.com/files/ups/files/33252951895.pdfIn PDF document text
- http://hkalc.com/userfiles/fugikukib.pdfIn PDF document text
- https://senesi-sklad.cz/userfiles/file/2136007300.pdfIn PDF document text
- http://www.aportecnica.com/imagenes/editor/file/85897057543.pdfIn PDF document text
- http://ifaistos.reality.gr/~triantaf/images/file/65769720709.pdfIn PDF document text
- https://windfreeklima.com/upload/ckfinder/files/25103553959.pdfIn PDF document text
- http://eakqshop.com/ckfinder/images_store/files/76150726790.pdfIn PDF document text
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161366a09bad61---15032510795.pdfIn PDF document text
- https://ecoquimica.cl/dinamicos/uploads/file/wufule.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614111a16739e---73113641294.pdfIn PDF document text
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/uiuqovldca593ni28cb48lllp7/56659335210.pdfIn PDF document text
- http://ranjitabiswas.com/userfiles/files/9196759539.pdfIn PDF document text
- http://werder-ritter.de/UserFiles/File/kikekupufefubetofojufeb.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139a901430ff---59876707188.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_off0000dd27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD27	10248 bytes
SHA-256: `08cde5b310f73d472c7a9919e261a43f1a491fb55ee2aec85fa81e383cdbec4a`
`font_01_sfnt_off0000f465.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF465	18084 bytes
SHA-256: `92c52592a708fae6e6987f69dbde33e2c1bd12ac80b6b3c7476b7376c5f06e08`
`font_02_sfnt_off000123c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123C7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.