Malicious PDF — malware analysis report

Static analysis result for SHA-256 a006247250476040…

MALICIOUS

PDF

110.1 KB Created: 2021-06-26 15:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 0b07e4974dea96a7e9afc9bf9f0762b7 SHA-1: ce28df9398f31aefd0d32139726e881ef0213677 SHA-256: a006247250476040d16a41da9c9c4f970398f80cc30d4ff3ce4f8bb07b3fddfe
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3787

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://allytemp.ru/uplcv?utm_term=my+hero+academia+first+movie PDF link annotation
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/7aj1vk7sku7olvpb2ggfvlesvv/43084128045.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/54688649104.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/68fe1c3530b4593a97db4d41ed2e661e/bejuravebefo.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c5165e071---dekagepasijifobuwap.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091cc8760b82---zalosedawoxeta.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4752827d9---visuromalidevuvufofuva.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16095be9f533f3---5884999789.pdfIn PDF document text
    • http://etasystem.net/userfiles/files/91158919776.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/o03l2u04u1ctdno1cm03v2ibi3/pojujom.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/nuvozupitososotusu.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/volikaxobugemodetizevom.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/gilerebisunewadozav.pdfIn PDF document text
    • http://cn-noah.com/uploadfile/file/27687808459.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/f1bb068832250356e2c33a3f6188302c/mupujelogagorok.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/9804f4e90e15f26021862733a03f7ac0/vifolom.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ba724f415e6---17005064646.pdfIn PDF document text
    • http://stylowa-pss.pl/userfiles/file/73923474167.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/sisinakexidub.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/17658140169.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/50591746484.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074c92627b7e---44039143148.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11926 18792 bytes
SHA-256: f2ce456d2d108fac610452430d771865656c7e98124c6d2daec1b2fc4b4ac7e0
font_01_sfnt_off00014a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000162a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162A4 18108 bytes
SHA-256: 2bc44c89832e86147ec166a2c0f51557e3e516baaf504e8eaf27a236dce38de3
font_03_sfnt_off00019afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19AFA 16332 bytes
SHA-256: e30398e86bc9198bb2e417f916c8ed2ea33a6d1127b3a9e9c9ec8b72f47ba906

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