PDF malware analysis — malicious · 647c0de05932f9d6

MALICIOUS

PDF

72.4 KB Created: 2021-09-13 11:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: cc7a9182645aa3db5a621e5c990cf07a SHA-1: 7f987c27d81ea5dd5d09273d8c02d36e8e9eae7e SHA-256: 647c0de05932f9d60c847e890fc3eca927b57bcd76dae94f1ec18631d1190c6a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farms indicates an attempt to direct users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.5732

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.
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://nomylo.ru/uplcv?utm_term=wcc+lite+hack+mod+apk+download PDF link annotation
- http://fitnessklub-impuls.pl/uploads/assets/file/tomiseriwewubofofagiti.pdfIn PDF document text
- https://jv-cms.crazy-jessie.nl/uploads/files/97778863372.pdfIn PDF document text
- http://zbigniewrodak.pl/galeria/file/suwerejuluparuvuzo.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161372badb42fd---mubovegip.pdfIn PDF document text
- http://lovesushiscv.com/uploads/files/juruzigezos.pdfIn PDF document text
- https://sukhayurveda.in/userfiles/file/35173603322.pdfIn PDF document text
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/6i3k3atlk40138nbh02gfijhpj/20434671090.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16131d2fc1d1ee---2945213360.pdfIn PDF document text
- https://unitedfightalliance.com/ckfinder/userfiles/files/39978910945.pdfIn PDF document text
- http://lightofislamonair.org/uploads/files/17417380072.pdfIn PDF document text
- https://hsse.hssanesteban.cl/files/65259487068.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ddd50bf3c3---xevurupulukobeg.pdfIn PDF document text
- https://pcetravel.com/files/file/29959164731.pdfIn PDF document text
- http://bbfrontedelmare.com/userfiles/files/nisoromolajozemi.pdfIn PDF document text
- https://floridagreatescape.com/media/file/98904080515.pdfIn PDF document text
- http://ramenhajimetustin.com/uploads/files/kalemozime.pdfIn PDF document text
- http://wumag.pl/userfiles/file/xafexogisanigugabu.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/265840c5d80ed67fe1552e1ba7c5784e/89372226342.pdfIn PDF document text
- https://aymexco.eu/ckfinder/userfiles/files/23131443008.pdfIn PDF document text
- http://phelieuviethung.vn/upload/files/rugenose.pdfIn PDF document text
- http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/2593f94c8af1ae5bf2b87efa759b6c7d/xigepi.pdfIn PDF document text
- http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/32816598086.pdfIn PDF document text
- https://www.aaptuk.org/ckfinder/userfiles/files/lilovivuloraberaraxuna.pdfIn PDF document text
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3ef48b1eb---xusawufiluxo.pdfIn 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_off0000c568.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC568	10680 bytes
SHA-256: `aa2522c1e1fef7c6486882cea8f89c6e6fa42ddc3a4c67f8f168e3429abcd18d`
`font_01_sfnt_off0000ddb8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDB8	17492 bytes
SHA-256: `f53f68fd2bb93fdc0c7067e2673baf0f031dbb649aa061b7c0d30f7d56831cba`
`font_02_sfnt_off00010b02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B02	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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