Malicious PDF — malware analysis report

Static analysis result for SHA-256 067a25cbcf02df07…

MALICIOUS

PDF

86.4 KB Created: 2021-06-30 04:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: a42dab7a068e796b540f538d7676144e SHA-1: 876c3434fd484b52c4cbf581632e3e35d6f895c0 SHA-256: 067a25cbcf02df07c41e9ea2dc17d8fcbec822cec6b599d2d5cfca1edc7b89f7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_URGENCY_LURE' indicates the document likely contains text designed to prompt immediate action, a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://coretry.ru/uplcv?utm_term=severe+calcification+of+arteries PDF link annotation
    • http://emmanuelmissionarybaptist.com/clients/74938/File/zitoradokowarux.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/24029454481.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/bivuvewoti.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be687ddb4f6---23765770970.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c498bbba2b---megaguvopudapamo.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/150839490960bdb26238857.pdfIn PDF document text
    • https://facades-et-traditions.com/actualites/file/26830687141.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16099f1c9b5fb6---20799430474.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/gifepuze.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/xedisanin.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/gftoqrgudhdu879frgumi664s4/24439280365.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c1b0484a9bac6d4b96bab78bf20c81e/xotubowimavomoforo.pdfIn PDF document text
    • http://thietbiotoviet.com/Images_upload/files/3899486996.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076c23c5f497---matof.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/61662218396.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/438e7aeb4b8b044ce5f62ae5fad03b5e/xetobisuguwure.pdfIn PDF document text
    • https://budapestpainter.hu/ckfinder/userfiles/files/rumamiwapokufifedopido.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/25504172360.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/pidijiguvub.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607777c621f79---16162680009.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16075d9e928953---tigugefedu.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a954663a5c---lemizoluperoz.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 10468 bytes
SHA-256: db7449fdc252cc38e96626102f401e815df83eb0daeaa084302f63275708f176
font_01_sfnt_off000108d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E5 16816 bytes
SHA-256: 107d2aae81970edc052af24bfa54c5dd5519f00470647cc67d8930748598e84b

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