Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5efa2d9545a66a…

MALICIOUS

PDF

70.1 KB Created: 2021-08-17 03:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: bc8d83fbe36e7b56f03a89d0fbac74ae SHA-1: a8958b55795dec50d577f376aef8ce954df27e9c SHA-256: fa5efa2d9545a66a1cb6c23f17367280a3a033d0b236797ce22fbc944fd27af6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. While no scripts were explicitly extracted, the structure suggests it's designed to lure users to external malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4270

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://irlanc.ru/uplcv?utm_term=how+to+turn+on+pocket+juice+hand+warmer PDF link annotation
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608427b04a9dd---5420206331.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608661440b2ce---12953455952.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/8f35cfdcfedea5c358404b74f6e35b3e/96644677116.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b80db8b1609---26825892409.pdfIn PDF document text
    • http://waelfawzy.com/userfiles/file/fejomorijafa.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/280232422905.pdfIn PDF document text
    • http://tnslib.su/userfiles/files/xavukufinefeb.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/991c287f51a41da8db37701a96c0c357/23283227702.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/66b82224a4e9816d70a215b54fffbc8a/niboreketokulogawotupig.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/239a5bfef2388dcc8f7fecdb79700fd0/bufukes.pdfIn PDF document text
    • http://ndt-ultratech.com/files/popejababesejabiwavux.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116c0e13eb0e---bapos.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913e53a918e---susavuru.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/67913995824.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160917d64567f7---50671323253.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/66094543687.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078194077b8e---rakafidetozidedosezizev.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/20134787380.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/45139222330.pdfIn PDF document text
    • https://lochoanggia.com/upload/files/69783031640.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c090c3dffc7---3297940641.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/0e0cae24fc20e62fd0636e60e712accc/78060097636.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/lasejoselokiwewobew.pdfIn PDF document text
    • http://drinkpoint.com/uploads/files/tajifujaben.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/jugunasidiw.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_off0000e259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE259 10964 bytes
SHA-256: 874f63b444d3a03b6411699d84950a4f4b0806c29610541bf0b2c24dc2101750
font_01_sfnt_off0000fb8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1