PDF malware analysis — malicious · 47a3423ba590356a

MALICIOUS

PDF

89.0 KB Created: 2021-08-03 08:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 8a5fba46cf1ce4c9cf9df7e4981b9e9f SHA-1: 692fae8c5d9517c44e1f8d5192880b52cb2c0775 SHA-256: 47a3423ba590356af4e5c9f478cb9456ab1b75c1ee36d14c04ca9e0c14d23bb1

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lead the user to a malicious payload or phishing page.

Machine Learning

Nyx PDF Classifier malicious score 0.9822

Heuristics 7

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/5d0b047e20f242c3a3a7809825819e7b/detiredofigananojunun.pdf In PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/728acqj03kf6342qblokpdvru6/92482980062.pdfIn PDF document text
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d2bf18823---25617145447.pdfIn PDF document text
- https://cristalensi.com/public/File/nujiwu.pdfIn PDF document text
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6b9f6a62a---97154259431.pdfIn PDF document text
- http://alde-pace.org/ckfinder/userfiles/files/gobiwavifumapesekibumeg.pdfIn PDF document text
- http://learningkey.org/userfiles/refutod.pdfIn PDF document text
- http://fittbikese.hu/files/file/93647063219.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/2vkavhuhn2d3k8ugh6p9dskqvv/mazukowelewifu.pdfIn PDF document text
- https://szekszardportal.hu/userfiles/file/mutosovagugurofone.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160db7bd4392ec---fegige.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/aecd3760a75e638e53a99f4bf3ce20cf/21000359524.pdfIn PDF document text
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc3b7d4417---37863419126.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/869e96d4be52d0277d2be7345e976c15/73499237936.pdfIn PDF document text
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7d14b9a7---38369413522.pdfIn PDF document text
- http://finalstage.biz/js/upload/files/vapigegigogibixuxapadu.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9aa416997---85938898077.pdfIn PDF document text
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ffcaad9bf---togoxixapozopuzeraz.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/0bf9548367249a30c7584aab7f2857e1/wakewegixabaz.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ba3a34fbc---42850970133.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607c082c97de6---wajalapikukigi.pdfIn PDF document text
- http://ekbdrive.ru/ckfinder/userfiles/files/jabix.pdfIn PDF document text
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2f963dc83b---parenuno.pdfIn PDF document text
- http://bwc.lt/i/sexoronekafulesose.pdfIn PDF document text
- http://hodgesmageefamilyreunion.com/clients/c/c9/c95619ca3ec29dd030dc8935b97378d4/File/43502916915.pdfIn PDF document text
- https://tmtteks.com/files/31604079865.pdfIn PDF document text
- http://nitexprofi.cz/userfiles/file/laduwusezijowux.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ejercicios+de+palabras+agudas+llanas+esdrujulas+y+sobreesdrujulasPDF link annotation
- 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_off0000f358.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF358	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010b6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B6F	11056 bytes
SHA-256: `6e2b4ef20f3d2a76cc374a7da3586da0f8e4f6cd7b5d19050ec3ee1381934287`
`font_02_sfnt_off000124c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124C8	19228 bytes
SHA-256: `7593708ddd81fe09990c2f2f216c97051d1e65cebeaf9ee27d940784ff90bfea`

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