PDF malware analysis — malicious · 8657642b5d101923

MALICIOUS

PDF

62.5 KB Created: 2021-09-29 04:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: 0f2865a014b6da4edf9b2b312d3cc1d3 SHA-1: a67eef377b07a7bfd5cdae509938b13f75005aff SHA-256: 8657642b5d101923ab7d7f075b52f22d627b6be89abb6115c8d45867068d6d28

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS uploads. The embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.5428

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://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613762df20302---16910456322.pdf In PDF document text
- http://digifast.cz/userfiles/napetuxamuri.pdfIn PDF document text
- http://marcth.pl/media/fck/file/63026297816.pdfIn PDF document text
- https://rafaela-motores.com/userfiles/file/74443703042.pdfIn PDF document text
- http://tauroconsulting.pl/userfiles/file/fepamazilif.pdfIn PDF document text
- https://doan295doson.vn/namthuan/images/news/files/sakafebefarudit.pdfIn PDF document text
- http://musicfriend.vn/public/default/ckeditor/files/58496954825.pdfIn PDF document text
- https://angkalaris.com/contents/files/49875631107.pdfIn PDF document text
- http://www.rsvpcatering-ar.com/files/imagesfile/52565055199.pdfIn PDF document text
- http://buyyoutubecomments.com/ci/userfiles/files/49040509732.pdfIn PDF document text
- http://prestinoequitacion.com/imagenes/upload/files/89815797802.pdfIn PDF document text
- https://dallaslandscapedesign.com/media/files/vofamuserigemipez.pdfIn PDF document text
- http://studiomuraca.eu/userfiles/files/91232499979.pdfIn PDF document text
- https://anjingliar2.com/contents/files/wumoxosigusakewe.pdfIn PDF document text
- https://inprovitcentroamerica.com/ckfinder/userfiles/files/ripuroxonuxater.pdfIn PDF document text
- http://abwingssuffolk2.com/uploads/files/1543389146.pdfIn PDF document text
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcd236cea1---78330775682.pdfIn PDF document text
- http://baikalspring.ru/ckfinder/userfiles/files/41253522491.pdfIn PDF document text
- http://chengzechem.com/upload/files/89233567032.pdfIn PDF document text
- http://mosme.org/uploadfile/files/kiwejozexim.pdfIn PDF document text
- http://cu-mbc.com/ckfinder/userfiles/files/75987686807.pdfIn PDF document text
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/48b0f009e4aa68fdfc72cf8bc20c75a8/93594538488.pdfIn PDF document text
- https://novsport.com/content/File/89673614876.pdfIn PDF document text
- http://daiichitelecom.com/uploads/news_file/pomojukefibi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=chrome+download+stuck+waiting+for+network+androidPDF 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_off0000b247.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB247	15488 bytes
SHA-256: `59d3d17d0c2537b548ca45f1eb2ee87dbbbf4c31f0c72e19ff7fd24b3ce59c0f`
`font_01_sfnt_off0000d90c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD90C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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