PDF malware analysis — malicious · daaddc20ec8aab1f

MALICIOUS

PDF

199.0 KB Created: 2021-07-21 18:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29

MD5: 74a78d06649a7ba273a13da0a0e203e5 SHA-1: 00d7feadd5d45a6e0234d85856f088783e47221e SHA-256: daaddc20ec8aab1ff735edf178c92e44df6bf9a6e6b85dabde05892507ad2805

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9492

Heuristics 5

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.
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://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607443dc1f1b2---piseku.pdf In PDF document text
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a55a4fdd4---63468964927.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6352d680b6---gedorufawetopiwotevoban.pdfIn PDF document text
- http://fogathajtohirek.hu/fckfiles/file/61617271329.pdfIn PDF document text
- http://fairmonteast1975.com/clients/0/01/014dde3c838f86fef2ac1d31a86c415b/File/wibasonimir.pdfIn PDF document text
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/1e1eead5ff26f080b82da31ab5d17e75/66570739638.pdfIn PDF document text
- http://tourister.kr/userfiles/file/37051307336.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/673bb1f75687a23c916fc9fc52fddd93/94154575993.pdfIn PDF document text
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160917c7015034---batupomerejusopup.pdfIn PDF document text
- http://chinajessie.com/seadata/data/uploads/img/file/162462101897.pdfIn PDF document text
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8d411840b---kajajuxubapaboruwiza.pdfIn PDF document text
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/30558687351.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092d1fe7e946---wujafodiremisomitovigad.pdfIn PDF document text
- http://giga.sk/storage/file/wotefej.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aada74d2fcb---fugubudubixega.pdfIn PDF document text
- http://controldellaves.com/app/webroot/arxius/file/kulakise.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/bagotuwibemobirurewogimut.pdfIn PDF document text
- http://utuin.net/files/fckeditor/file/97728848615.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f6c218aa8e0---fibudipiso.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821ac363c73---zepokizuxivezot.pdfIn PDF document text
- https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/b31d540fb832e5882010f74cb6c772f0/veduxe.pdfIn PDF document text
- http://hydrem.ru/images/file/levokageberojugebatoku.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d45a738919---zegirejub.pdfIn PDF document text
- http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c35f10854a0---fozexekoli.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=shatta+wale+save+her+heart+mp3+downloadPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0002891f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2891F	10964 bytes
SHA-256: `e8c522fd1a67533ef07a92da824a3702109c9eb7c30960acce0c5c818d264a2f`
`font_01_sfnt_off0002a279.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A279	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0002ba8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BA8B	20488 bytes
SHA-256: `b7885d6c9ab93f5454abe02cf23b5ca9f0b02a5c1cadd2af0f61585876b8859f`
`font_03_sfnt_off0002ef48.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EF48	9200 bytes
SHA-256: `7fd59927769212057062118b7b9113b0b6033d7c34e153c3e43eeaad34cb0198`

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