PDF malware analysis — malicious · 85426e5f12f21860

MALICIOUS

PDF

80.7 KB Created: 2021-07-15 11:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29

MD5: 69f479723c8eed4b5d20abd542619aaf SHA-1: 6dcb400fb273dc4a89d289e44bfdb10d1078bfc7 SHA-256: 85426e5f12f21860cf990a2e1f384eabdba46aa1fefc23c0b6e7e3fdb0d387af

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan. It functions as a link farm, containing numerous embedded URLs that point to various websites, many of which appear to be compromised CMS uploads. The primary purpose seems to be directing users to these external resources, likely for phishing or further malware distribution.

Machine Learning

Nyx PDF Classifier suspicious score 0.4058

Heuristics 5

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
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://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e70127ca89---fojuf.pdf In PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7eee2c5df6---75581582252.pdfIn PDF document text
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16096d8a52eaa5---60689923353.pdfIn PDF document text
- http://bet-balance.com/userfiles/file/7945483004.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/le03tl27lfv3olnt25ev16buc4/lirogeleruvagotunirisadu.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a79b5f7d705---7148585417.pdfIn PDF document text
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/o8lucal7rsba06bsjoi9q6b671/powubedilililorafegojob.pdfIn PDF document text
- http://pointerboards.com/uploads/admin/files/navotubife.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762698b5ae5---32129745498.pdfIn PDF document text
- https://cometsecurity.in/admin/userfiles/file/gexebavavibidimalejuz.pdfIn PDF document text
- http://infrabud.eu/fckpliki/file/ligozekutanewisexefifozes.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/555ee4e8e4946d38645425e97a6714d1/20902151916.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7f0be9df0---98741936916.pdfIn PDF document text
- http://abimobiliare.pl/pliki/File/somakis.pdfIn PDF document text
- http://mjsolankifoundation.com/fck/imagesfile/kedogipaterawed.pdfIn PDF document text
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a873474ffc2---rilabedirin.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/dchqdakuij5fd6fuot4rl43oq4/82346612434.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210523134448_1607975166.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a453642fb27---17167215186.pdfIn PDF document text
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160964ef449677---35012902259.pdfIn PDF document text
- http://kalkulacka-hypo.cz/userfiles/files/sulurasi.pdfIn PDF document text
- http://marcth.pl/media/fck/file/vijufixamop.pdfIn PDF document text
- http://kinocosmik.ru/sadm_files/mudazu.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+do+you+kill+the+ender+dragon+with+bedsPDF 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_off0000f26a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF26A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010a81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A81	11052 bytes
SHA-256: `72a66aefcdeb2875945a69bfd7dbaf19c9130333c42ccbc4dbf07c14e17889b5`

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