PDF malware analysis — malicious · 50fecbf6e6aa7a5e

MALICIOUS

PDF

77.5 KB Created: 2021-09-20 12:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 5949f3e5d3e8b07b74d4700cf5d73b65 SHA-1: cd68347d8616a3ceb76e41fe55702b2601be82cf SHA-256: 50fecbf6e6aa7a5eb91aee2f2a87b5b2427fc4c1edf7bdb0121d9aa9c0bed51a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics further supports the attack pattern of luring users to external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9948

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://philabc.ru/uplcv?utm_term=julius+caesar+by+william+shakespeare+pdf PDF link annotation
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/mb75osk0rmte15bd4ngb36flg3/sagaxanobewutunida.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613917a77280b---jelef.pdfIn PDF document text
- http://www.oiseaubleu-promo.fr/userfiles/file/juruzave.pdfIn PDF document text
- http://cerezolorente.com/files/cerezolorente/_repo/file/53007285562.pdfIn PDF document text
- https://toolsatool.com/userfiles/files/73826985534.pdfIn PDF document text
- http://lasfyy.com/uploadfile/file/20210901174901234.pdfIn PDF document text
- http://cpgny.com/userfiles/files/sugagosipe.pdfIn PDF document text
- http://crediramasrl.it/public/file/zugoxuxabilarumofesulekak.pdfIn PDF document text
- http://adria-ex.com/images/blog/file/98813871186.pdfIn PDF document text
- https://daaeportrett.no/upload/file/60478125693.pdfIn PDF document text
- http://le383.com/uploads/files/88031204810.pdfIn PDF document text
- http://grupposcorcia.it/userfiles/files/lirewegavomixi.pdfIn PDF document text
- https://clickbox.ro/images/file/merula.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9a358bb5b---51049434828.pdfIn PDF document text
- http://limuzine.md/userfiles/file/67050442748.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef499a0735---lejimemurujanofe.pdfIn PDF document text
- http://rutka.pl/media/upload/files/bf9272ea7a76e37c70c08c5a1d9931e1.pdfIn PDF document text
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394dbc08a95---vapokekibuzotudamisumase.pdfIn PDF document text
- https://maffart-guy.com/userfiles/file/koputinafum.pdfIn PDF document text
- http://georgekoldun.com/var/upload/file/74795650347.pdfIn PDF document text
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3c1708805---73296410889.pdfIn PDF document text
- https://home-consult.lu/userfiles/files/josirolov.pdfIn PDF document text
- https://xo-sound.ru/userfiles/file/6965420625.pdfIn PDF document text
- https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210913180345.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_off0000c2eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2EB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000db02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB02	11088 bytes
SHA-256: `30d1104113b1e1abf14d556d09534d41647bda6acdf1072aa18e79990c941cdb`
`font_02_sfnt_off0000f4b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4B4	20008 bytes
SHA-256: `a628bf7647c94283ef6dd291b7348c2a8c591ab3989ea27abb64144f7352c0cd`

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