Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6c7426368193bc…

MALICIOUS

PDF

82.2 KB Created: 2021-08-15 01:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: cb6266f71cfeb804c9b039cb17cf3f97 SHA-1: 9629acefc7979cf810775279c7bd9850ce316bf2 SHA-256: 6d6c7426368193bccf9811805bad5d0cd9d19399d27eb2f8822ff7a938d6a690
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The primary attack pattern involves directing users to these external sites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://philabc.ru/uplcv?utm_term=how+do+you+mix+ion+bright+white+powder+lightener PDF link annotation
    • http://perilatomsk.ru/ckfinder/userfiles/files/92167706198.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/waxalurerilizuripopeju.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/wiparenewepira.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/9e5ae0df92c0c837aa76feaa79cd4511/wejoragiliguvuzu.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/11d6e5b6e89d65b7b4abd7a75785a5ea/nizijemepisupedoz.pdfIn PDF document text
    • http://inlygiaylynhua.com/upload/files/jukutif.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/2d8698b3d23e8019648f02009a6b2ad1/6453094658.pdfIn PDF document text
    • http://brightwayconsultancyservices.com/userfiles/file/xatujupovelijuw.pdfIn PDF document text
    • https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/kilufezugerogip.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/novaxuziduliruba.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c793f34049a---fikumesipob.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec4be27c1f---11384357664.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/3f84c23a823eed69acfa81ad45600cd8/gozijuvavebib.pdfIn PDF document text
    • http://montpellier-businessplan.com/mbp/upload/images/images/upload/ckfinder/mepizesutebenaxovu.pdfIn PDF document text
    • http://studiomistretta.com/userfiles/files/47407245739.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/1576432650.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/jobufulezawawe.pdfIn PDF document text
    • http://consol.hu/images/uploadedimages/file/42450461367.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c6545eda4---wuxufojovosadej.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ace70d1624---refavak.pdfIn PDF document text
    • http://zeci.nl/im/image/worowov.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/pesuvebililovaveb.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/13639349399.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/37585244497.pdfIn PDF document text
    • https://esterkins.de/ckfinder/userfiles/files/44835508676.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDE 11044 bytes
SHA-256: 3b833549f5b021e7cc03ad7960f1aa07e9580f56b01a03eecccf5e5c0deb9ccc
font_01_sfnt_off0000f5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF8 17056 bytes
SHA-256: 3ed19fb05d0ab354b59d9305ff1534f5df6e861ec496f4e888752e77dd534280

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