Malicious PDF — malware analysis report

Static analysis result for SHA-256 7355ef39ad28c339…

MALICIOUS

PDF

54.2 KB Created: 2021-06-30 20:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 08375d6fb6a92f832fdefcd9ea93f0a8 SHA-1: ee7692fc58f5d863c52757c07df0e6b036630862 SHA-256: 7355ef39ad28c339a8d441039d62ffb72ad88b0a5f7c058f57c06f278315af94
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users to malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The presence of embedded URLs suggests an attempt to direct users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5894

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://a2designbg.com/userfiles/file/5719665457.pdf In PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607decf21ee95---nunorunepefazawewiwabixi.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/ddb626427c556dc5700fa3f82d509fb3/gekirikulafipabe.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/b700dd762a9693c22de8d012ff2295e5/rabunolobukudimo.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911c6af1b78---gubedesonaravezibodawiwo.pdfIn PDF document text
    • https://butterfly-propertymanagement.com/userfiles/file/46117346557.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073aae48ff33---52992525605.pdfIn PDF document text
    • https://soechi.net/userfiles/file/vajoxobadovokixixumijire.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/fifefatibuninizorebik.pdfIn PDF document text
    • http://tai-group.com/upload/files/nujibuloz.pdfIn PDF document text
    • https://jordan.si/dokumenti/file/lojomi.pdfIn PDF document text
    • http://ezibra.pl/upload//file/75360463372.pdfIn PDF document text
    • http://accronline.com/userfiles/file/99173180343.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/48akjeeo0t19ulft2npkf33ne7/nesinopag.pdfIn PDF document text
    • http://imaginove.eu/data/Files/memizuvifeno.pdfIn PDF document text
    • http://wienbildarchiv.com/upload_files/files/roxakixazupogi.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/7btv51dd1a4r8ksoasn24fplv6/11049937447.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/1hu6r1dstt602bpe0it30ju3ko/20096726119.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/89fa6436ae3419be7dfb01de14c323ec/gojomawojitapubiborunalus.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/411ef901811cbe9718e7e597d6e38a5e/zomujajogodip.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609831076dc76---fezubo.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/tstmd1im2vgiqhr1o4jbcdrrtn/69885751986.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=diabetes+light+headed+after+eatingPDF link annotation

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