PDF malware analysis — malicious · d178bc0df9757008

MALICIOUS

PDF

86.7 KB Created: 2021-07-26 04:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 610bf9a8e02e6ff4d2dc36bafae63468 SHA-1: f8a1aea27484e5c1ada2dce8f36e58ba6d862b1f SHA-256: d178bc0df9757008d9de417fa49984975e0f4ec6d0d9c51aa59c1362d22b7ee7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the presence of multiple compromised upload URLs indicates a likely attempt to host or distribute further malicious payloads or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

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.
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://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/89873497bddf735ae9b66d5ff1c3b36a/47880496046.pdf In PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf735ea004---43099754828.pdfIn PDF document text
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092378da811c---10102176495.pdfIn PDF document text
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/3dcc5d387d75b3ac5f6e7a7cfff8532a/60602687197.pdfIn PDF document text
- http://bluekeydigital.com/images/pic/file/40583010802.pdfIn PDF document text
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/g2j1ii6i5qtbe0q4nrbjdfr5a4/63461693876.pdfIn PDF document text
- http://massageindex.nl/images/uploads/36208676730.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8bd229d9b---74040289133.pdfIn PDF document text
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/89919910811.pdfIn PDF document text
- http://aplus.to/userfiles/file/69406173316.pdfIn PDF document text
- http://jessie.vn/images/ckeditor/files/lagevaxitopipege.pdfIn PDF document text
- http://asianmosaicnyc.com/userfiles/file/71395575265.pdfIn PDF document text
- https://congtydaihai.com/upload/files/33197647157.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b5c25704a---92340231357.pdfIn PDF document text
- http://agcslohian.com/userfiles/file/53287180726.pdfIn PDF document text
- http://altaprecision.com/userfiles/file/juzuxebuwujibubuj.pdfIn PDF document text
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c78906147e---72238395275.pdfIn PDF document text
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/5dli9fvpd5gdqska3hhomkor6s/51668234471.pdfIn PDF document text
- http://duocmyphamcongty.com/app/webroot/uploads/files/furavesawili.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/88dhjlpnusulka1g4g1itn1rpn/gumevofupuxinuvesosuwij.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/61709635542.pdfIn PDF document text
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/6d0a57edc2c858adf6d79993a039f60c/noravedax.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/fddc6ff7d85468c22cfea5a896697267/mukijulomir.pdfIn PDF document text
- https://asset-books.com/userfiles/file/pudejakowupexisewe.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/cd40ddc18e1bc6889673ce480ac9a7ed/20705249613.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/vogubefuxawudolidubasijop.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=mini+militia+unlimited+everything+2021PDF 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_off0000eec3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEC3	10976 bytes
SHA-256: `a1ef2aebfb29b472a611d9e6c3a4dee00ad4b9a33543f663ad7f76a51367ca78`
`font_01_sfnt_off000107e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107E5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011ff7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FF7	17116 bytes
SHA-256: `1553148b8cf1c16e9fe06ed13355823c794e9c1a8910dce057aafc095cabe2ae`

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