Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50cce63e5e662bc…

MALICIOUS

PDF

74.9 KB Created: 2021-09-20 03:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f08b5255b384740deabc3550f897e9b8 SHA-1: 9048f7cbcd3134895f2fbb32a66b5a2fe8d6b844 SHA-256: e50cce63e5e662bc68225ec1ddc1b9a887d5c8a42496c75182f2570662acc8e1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that redirect to compromised websites, many of which are hosted on disposable domains or compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware by posing as a software download link. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8530

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://pixomot.ru/uplcv?utm_term=fortnite+android+download+apk PDF link annotation
    • https://cristalparkhotel.com/ckfinder/userfiles/files/93556200184.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/26682212298.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/libowu.pdfIn PDF document text
    • http://hotstamping.pl/files/file/86546007319.pdfIn PDF document text
    • https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/difawa.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/91695422675.pdfIn PDF document text
    • http://xn--9i1b14lzokxjcrti5um.com/upload/fckeditor/file/kumes.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16146008abe069---vawuxeti.pdfIn PDF document text
    • http://446888.top/userfiles/file/70869427520.pdfIn PDF document text
    • http://songdolandmarkcity.com/userfiles/file/21440136298.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/xigari.pdfIn PDF document text
    • http://kristiankutschera.de/userfiles/file/lunenexenixozedivatuzifel.pdfIn PDF document text
    • http://artdental.hu/editor_up/safedisujimira.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/23707849644.pdfIn PDF document text
    • https://fong-cai.com/upload/files/pujudasedekaxixutiwisel.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614114889d1dc---87121235351.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/22000430016.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/93070124156.pdfIn PDF document text
    • http://www.likoda.com.tw/upload/ckimg/files/34292432161.pdfIn PDF document text
    • http://vuason.vn/upload/files/revozuwinonivu.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/d2bg49ctt2gv2pq2dlpkud7510/biwajanigi.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e6588641e---18828155138.pdfIn PDF document text
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000e0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C7 19252 bytes
SHA-256: f68485dbaac93ade5f3317c8e8adacbf0ca2e71f741498ff95858c5f444af56e
font_01_sfnt_off000112eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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