PDF malware analysis — malicious · 364348240e04f6ab

MALICIOUS

PDF

85.9 KB Created: 2021-09-17 23:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 1e702402d6d6779c9a254f5d6f597f38 SHA-1: 70a5a4b31e4e31ee0a6a69540fdc59bc093c8ae7 SHA-256: 364348240e04f6ab2e2a78bac2e398b2a0efe6cdc3f9bc1ca028b4db1138ca21

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous links, many pointing to domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. ClamAV detected this file as 'Pdf.Phishing.Trojan', strongly suggesting a phishing or malware distribution intent. The presence of multiple external URIs and the link farm structure support the classification as a malicious document.

Machine Learning

Nyx PDF Classifier suspicious score 0.4046

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://cevhertemizlik.com/userfiles/files/lifoparimul.pdf In PDF document text
- http://kameleonhastanc.hu/files/file/dozilizewafinumotuw.pdfIn PDF document text
- http://childconnect.com/swi/fckfiles/file/77208356957.pdfIn PDF document text
- http://sosonomo.com/ckfinder/userfiles/files/85001534832.pdfIn PDF document text
- http://cen7dias.es/userfiles/files/49248950874.pdfIn PDF document text
- http://tucholainfo.pl/userfiles/file/36667670818.pdfIn PDF document text
- http://travellerisland.com/files/nevelajoveniwegom.pdfIn PDF document text
- http://gpp300.fr/userfiles/file/80332929759.pdfIn PDF document text
- http://news-hk.net/uploadfile/file///voxanoxagogidibuxox.pdfIn PDF document text
- https://airflow-skateboards.com/userfiles/files/23905171137.pdfIn PDF document text
- http://poney-club-romilly-aigre28.fr/userfiles/file/bapogewogufunufunev.pdfIn PDF document text
- https://frigosztufi.ro/ckfinder/userfiles/files/wopowixegu.pdfIn PDF document text
- http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/patulo.pdfIn PDF document text
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/6a33158b79b6172e719d93ac817e986f/59606169874.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef8538cba9---45728618743.pdfIn PDF document text
- https://tyeetomsfishing.com/userfiles/file/fumasupowiwuw.pdfIn PDF document text
- http://zuche0551.com/upload/file/wilatu.pdfIn PDF document text
- http://mcap.cz/images/uploadedimages/file/fojesixos.pdfIn PDF document text
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb0107a499---15934830960.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/nb51eg8a9enihc35j0gebk4o04/80945156347.pdfIn PDF document text
- https://angelsforwarriors.org/userfiles/files/16479347303.pdfIn PDF document text
- https://ddnepal.com/assets/userfiles/files/tivavifetekopuxuzikepad.pdfIn PDF document text
- https://hotelite.in/userfiles/file/57554863192.pdfIn PDF document text
- http://benthanhsgfarm.com/images/uploads/files/xikudaw.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=visual+design+elements+and+principles+pdfPDF link annotation
- 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_off0000f9b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9B9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000111d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x111D0	10912 bytes
SHA-256: `ae3acb972f01279b99c17176bb0d69ad8fe9ea71dc59eaf44089042cad23149b`
`font_02_sfnt_off00012acf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12ACF	18344 bytes
SHA-256: `9490e9cf803e057ee98df7a061f06536e10595dff43e878a11157f103ad9fdbc`

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