PDF malware analysis — malicious · 8b2ae48b89e17139

MALICIOUS

PDF

95.7 KB Created: 2021-09-01 00:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 1ea0c265de3635c09f628afb1a5d6834 SHA-1: 9806134e71c204e97f9fe04c1b33118675222a5a SHA-256: 8b2ae48b89e17139f23aca9e41c002c47fb2c94bdd12da85be7144c9ce8a4a1a

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, indicating a link farm designed to redirect users. The PDF's structure and the presence of these links suggest it is used as a lure, likely for phishing or to distribute further malware.

Machine Learning

Nyx PDF Classifier suspicious score 0.2793

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://newat.ru/wp-content/plugins/super-forms/uploads/php/files/8297bb8817edd744bf8ebde92478d874/libesifaxukejivibidaras.pdf In PDF document text
- https://www.ebenisterie-burette.com/ckfinder/userfiles/files/16432375378.pdfIn PDF document text
- http://lukasikgroup.pl/Image/files/80321162176.pdfIn PDF document text
- http://theettiaresottawa.org/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/1278413368.pdfIn PDF document text
- https://yellowstonewildlife.com/55950147506.pdfIn PDF document text
- http://keyflounge.nl/userfiles/file/32202141463.pdfIn PDF document text
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/e1fdcb6954312beb16038c3940af4b8c/tuguzederotululufonakirav.pdfIn PDF document text
- http://toptoptraining.ru/img/upload/file/40475136538.pdfIn PDF document text
- http://przystaneknida.pl/data/aktualnosci_imgs/file/35964435003.pdfIn PDF document text
- http://katheran.com/clients/55933/File/muwekafevupovuxemevo.pdfIn PDF document text
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/73614e224088ecdc6389dbf889e23c5d/38350179702.pdfIn PDF document text
- http://bebelino.ru/userfiles/file/5980555544.pdfIn PDF document text
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/30nl1q08djmt61ujdn06rhnck4/67267481142.pdfIn PDF document text
- https://0800-707-808.com/upload/ckfinder_temp/files/20210719183818.pdfIn PDF document text
- https://srmhomes.com/images/bulk_images/files/9946667071.pdfIn PDF document text
- https://tennis94.fr/img/pics/files/37853729198.pdfIn PDF document text
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a86d5c530ff---24663781232.pdfIn PDF document text
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/5686b7e7756cceae76af8c4a52424480/ruloguvekupumufiwubana.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16093f4c62a737---35432273459.pdfIn PDF document text
- http://biotop-zamosc.pl/userfiles/file/pogibav.pdfIn PDF document text
- http://arc-en-cielproduce.com/ckfinder/userfiles/files/92879984909.pdfIn PDF document text
- http://cnex.cc/images/blog//file/19362226892.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160b22a077a62b---35632351415.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608345b3c0df2---modisuz.pdfIn PDF document text
- http://alemotta.com/resources/original/file/48536942291.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=sparknotes+hitchhiker%27s+guide+to+the+galaxyPDF 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_off00012d6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D6B	18804 bytes
SHA-256: `d6746bf72dee3b8569194ef0663fcffc639d9be7c6387c8c0deba3005a90f07b`
`font_01_sfnt_off00015e82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15E82	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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