Malicious PDF — malware analysis report

Static analysis result for SHA-256 6147faea3177cbe9…

MALICIOUS

PDF

252.3 KB Created: 2021-07-21 13:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 0d9bfc78213cdd4edb32977c4fab3bbf SHA-1: 80268f9343e85f66b5564300a675bd0d430aefd8 SHA-256: 6147faea3177cbe9cce02002987da949135ac8e6d72a73489eaa0d6f7698d3f7
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. 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 malicious score 0.9783

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/12290890649.pdf In PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd19debe3c---tomapukovisi.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/43482113650.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/958803720c2d777da701b7d0be50954e/dipoxubejemilefunop.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/manupovivone.pdfIn PDF document text
    • http://wenxuezj.com/images/File/67509690645.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/59fe167980c1ada8506445de2b3fbb93/40354381802.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16093fcd686c5e---61538274625.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607819db2c245---50813377340.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202106file/2021061405532170554.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-21/20210521103240458630.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/1f65e7c60e1eb79a8cd0e725f9010492/wubumofekupajugenefanu.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/528c75a9fdee1851dee5bf6a1ad76209/15620138694.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608aac209db41---rotekavumejafowufodebeda.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/89884376869.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/1a0ecb794d3c9b3be380091fcabee565/42511268171.pdfIn PDF document text
    • http://mirutte.com/newsfiles/files/zukubenizage.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed319e4802---59411326171.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/kowonuza.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d52a89910a---fetasibasemapezisoxi.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/kogodeperupetuziwagexarun.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/tinutoburefifepojikap.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/87213440112.pdfIn PDF document text
    • http://tatnhapkhau.com/ckfinder/userfiles/files/76763502597.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=crystal+reports+formula+if+thenPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37285 23984 bytes
SHA-256: e8a861b2ba79e9e1fbabae69241648531bfee6b6a1af98d323d91cf8999de0fe
font_01_sfnt_off0003b037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B037 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003c84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C84E 10868 bytes
SHA-256: 79c05353bd1b2822be8254ee257958e65704886aaf9245c785f805a95ae75c02

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