Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e54bbd9d06826cd…

MALICIOUS

PDF

67.0 KB Created: 2021-07-21 23:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 0dc7a4d33d7b81732c69f5dfadf421da SHA-1: e2df58fae487b3c461967bc810c495936144c923 SHA-256: 4e54bbd9d06826cd597abd36861d1ff320ea698815f1521e519c3f2ffe8d6350
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to multiple external URLs, many of which are hosted on compromised WordPress sites. This pattern is indicative of a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9583

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://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/jsh361mt2qvndr3bnsr1rp1j73/26064901822.pdf In PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/bbdad56b18e03aba645151464d54a194/76352329588.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/7830526e4df047abe782600218c91acf/welololuwogarafeleka.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/us8dku7fc4grik8e8qbhemc8l5/44519434081.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091bb0770953---67529997427.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/5c1dfbd12ba0e6f52aeea5e1b5ba20d3/mevajivonexurirorixibupi.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/48819225344.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-18/20210518200023237508.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/85103802057.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2902d0f4b7---xepitasagodikaxavudem.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160709f04ed648---nefidagogubupaka.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/4k8u6os1j5l8o4ododnoigfnhp/79820807489.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160e1f5de8c56f---merefo.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/jobaweramubemelupur.pdfIn PDF document text
    • http://banghetretruc.com/media/ftp/file/78977865836.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/100daaf85b3812e4ebf1c147734518aa/71195958438.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e3c41775ff5---gupunebafipolodod.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/6e88s6g3lnvk7idqjhr12er11j/94129820032.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/kq4spku15mrn0edmf97ur0qc12/tafisovepurevegosapamej.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b4d95c1cf0fb51cfd7a0434ba6e8498d/zolixumovifuvimipe.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607938d46524b---96926059687.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/akjqik2bgspp130od3avspu3jn/vemiti.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16070392b405f9---metutamumozu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=competition+maths+book+pdfPDF link annotation

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