PDF malware analysis — malicious · 2dc0b2fa0278bfb7

MALICIOUS

PDF

72.0 KB Created: 2021-09-03 23:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: db9944cca3d939b75400ed8623aa6ca4 SHA-1: 52c58b9ba7b6c9ba25377e00f4f9daabe0559054 SHA-256: 2dc0b2fa0278bfb761ac9109546b585b35f21f36ca6ff303e678828f2d5ea6f8

132 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed embedded JavaScript, which is often used to execute malicious code or redirect users. The PDF also contains a link farm pointing to multiple distinct hosts, suggesting an attempt to obscure the final destination or distribute payloads from various compromised sources. The presence of these elements strongly indicates a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier suspicious score 0.4326

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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
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 http://4998horo.gmmwireless.com/contents/files/ninid.pdf In PDF document text
- http://wx-test.com/upload/ckimg/files/202108200927187648.pdfIn PDF document text
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609be15ee133c---72459891891.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b45c2254dd4---62385991417.pdfIn PDF document text
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69703d8bfa---dufisidusavitagujomete.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/23259632684ef9bd5151a66dc6b94619/61210419046.pdfIn PDF document text
- http://lixupeng.com/uploads/files/durofizokaxasipaxokarewo.pdfIn PDF document text
- https://stabiactiv.com/userfiles/file/27702995941.pdfIn PDF document text
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/e5hgfk30gqiflp85iej2t1om92/77170234424.pdfIn PDF document text
- http://urbancollab.com/userfiles/Proj_Name//files/bavokegez.pdfIn PDF document text
- http://turhantur.com/turhantur/files/zizela.pdfIn PDF document text
- https://chinatupai.com/web/js/ckfinder/userfiles/files/94974877282.pdfIn PDF document text
- http://bettynblue.com/upload/fck_img/20210615/file/86669002874.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/e937616936b17fa5fbf3c4ad264bfa57/sevafezotofuxawofanezi.pdfIn PDF document text
- http://stadion-zarya.ru/ckfinder/userfiles/files/30854025785.pdfIn PDF document text
- http://eurekaelearning.com/upload/news/file/kiditilo.pdfIn PDF document text
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/926b95005d4c621324805a7257f50f3b/96517768410.pdfIn PDF document text
- http://kaies.cn/upfiles/21071810552606863936xg05.pdfIn PDF document text
- https://cgeminfos.ma/upload/file/50895069669.pdfIn PDF document text
- http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nesenupixugokefijuna.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c5c1bfd5b---wamemesumegitiwunuvemo.pdfIn PDF document text
- https://panoramamall.bg/ckeditor/ckfinder/userfiles/files/63065921525.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607951321bc7a---jipomawukijexixuxomunu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=pdf+to+word+full+crackPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d32c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD32C	10252 bytes
SHA-256: `b1fcfdf7fcac09841711931c11fc1c15603294c6520fe9cfed0f1cbdf0ea639f`
`font_01_sfnt_off0000ea71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA71	18056 bytes
SHA-256: `360044c3519e075ddbbe1ddddba555b97cfeff1b2e01627b0c79dc031671e5d9`

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