Malicious PDF — malware analysis report

Static analysis result for SHA-256 f015df55698843fe…

MALICIOUS

PDF

63.7 KB Created: 2021-06-03 11:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5597df80cac49786317bd97429ede1d5 SHA-1: 3c95b98cc68d14b092d2012f36128fb3844a5a16 SHA-256: f015df55698843fe4061905d073560d43947b693a3760652be2d9150e1f96aa7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which appear to be compromised or disposable hosting. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging indicates malicious intent. The document's structure suggests it's a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8599

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://crewmak.ru/uplcv?utm_term=pokemon+sun+and+moon+gba+zip+file PDF link annotation
    • http://voxel-avocats.fr/uploads/file/jufadewebe.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/n9mbtirmsag63obcc51rodjbrd/45128217170.pdfIn PDF document text
    • http://www.prieteniitehnicii.ro/documente/file/visinefuzixebivubenorofad.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/89053346181.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608c209f9151d---99650380230.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a0d9f9b92d---pibosazekibo.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16098f73996ea4---budonarotali.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/85914320121.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a114c7ccbdf---tezebufutomiluzupeluvul.pdfIn PDF document text
    • https://bojovicsirogojno.com//files/libaneguzupatenavum.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/7pobt5dct7dsirijn6do7ubvu1/66711699600.pdfIn PDF document text
    • https://soechi.id/userfiles/file/xaxamenofotefezifupogopo.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/62354444764.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/rqcqc7jcj11o9dosgs4it2h1ka/vafolifebapixirepabufowom.pdfIn PDF document text
    • https://motacademy.it/file/zixotivadogazil.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/64402968291.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/9789551649.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5ec04c2fad5fe0b868ebc8df8325c31d/2287646032.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 5520 bytes
SHA-256: 365748ddc7de1e74815fe714c74c59fc39571ed6ad63f2bfaecc3f8a6d8e04c5

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