Malicious PDF — malware analysis report

Static analysis result for SHA-256 067450549c6cae2e…

MALICIOUS

PDF

64.9 KB Created: 2021-09-07 23:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3f2268789c1771114eddcb576f29630a SHA-1: 58c32d1003a6f522b4a1a051f6ead76c6fa49000 SHA-256: 067450549c6cae2e9880b55c01dcd5832ce15944a5d5166d7cff2d22db26c624
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to host malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware distribution. The ML classifier also flagged this PDF with a high score.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

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 http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc6b9dcd5e---69488379224.pdf In PDF document text
    • https://fpcofmacon.com/nbloom/fckuploads/file/voxirilupebogixag.pdfIn PDF document text
    • http://cgl.lu/userfiles/files/31824050138.pdfIn PDF document text
    • http://ketphatthinh.vn/upload/files/34197075967.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/90a62227f44205a7fcf65cf17280953c/54434058270.pdfIn PDF document text
    • https://www.greenlakecruises.com/ckfinder/userfiles/files/gitonikewo.pdfIn PDF document text
    • https://aljazeerahdrilling.com/userfiles/files/jajefawizunupokarem.pdfIn PDF document text
    • https://psg66.ru/admin/ckfinder/userfiles/files/movunoxi.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160845abeef840---rosovad.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/6135313291.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/faxukuvoxeminulebate.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724b2009435---49811975450.pdfIn PDF document text
    • http://envigest.cz/upload/file/54464225520.pdfIn PDF document text
    • http://superazs.ru/images/news/file/xorikosekubunugejofala.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607738e8a32dd---lesaxojezivozejimere.pdfIn PDF document text
    • https://themalc.org/files/file/74199070823.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/m06j79ccrnft335ma32nqhc1ah/galodalixevujiwopunij.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/koxeg.pdfIn PDF document text
    • https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/49862379519.pdfIn PDF document text
    • https://goodline.by/userfiles/file/99202607584.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074ca59ef1b2---kodederukokuzuxagazevun.pdfIn PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/lividexanabutasode.pdfIn PDF document text
    • http://medica-brno.com/files/3118073621.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=nissan+qashqai+owners+manual+2018+australiaPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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