Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f46d8ccd093487…

MALICIOUS

PDF

80.9 KB Created: 2021-09-19 14:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fa48c0ca2a1b2fda65da2d0d1bc8314c SHA-1: 37fbe130174cb459adea57f29ff092c78cf4d7c7 SHA-256: 06f46d8ccd093487f0394a94bee63476f7fbb832392116d4cc90fe28ec192af7
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm for SEO poisoning. The embedded URLs and link farm structure indicate an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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.
  • 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
  • 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 https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/vv3kk63tsbn54pl4oep1uai4t2/81693158663.pdf In PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/futowowidunonaga.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/vetazefut.pdfIn PDF document text
    • https://bodykneadstherapy.com.au/ckfinder/userfiles/files/dajexanutut.pdfIn PDF document text
    • https://nikunjfoundation.org/ckfinder/userfiles/files/43553093286.pdfIn PDF document text
    • http://piqiso.ru/userfiles/file/38323374326.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/4k91h1bssgmk96ks5pqkokgimg/vasebewikar.pdfIn PDF document text
    • https://dveropolis.ru/upload_picture/14187352557.pdfIn PDF document text
    • http://asvpp.fr/pdf/13155961987.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614537f011330---bojonan.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/xunuwo.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/9e2e2e07b156fd99fb28933dd9bcd496/216478436.pdfIn PDF document text
    • http://easytravel63.ru/ckfinder/userfiles/files/44887107927.pdfIn PDF document text
    • http://arsvet.ru/img/upload/pezorababojikuwutexok.pdfIn PDF document text
    • https://doanhnghiepvietnam.niengiamdoanhnghiep.vn/img_duhoc/files/faxot.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/sujefokig.pdfIn PDF document text
    • http://salonmysliwskirys.pl/userfiles/file/16763283483.pdfIn PDF document text
    • https://www.domaine-de-la-ferme.fr/ckfinder/userfiles/files/kejut.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3aadc8dee---42983764672.pdfIn PDF document text
    • https://poganyvolgyi.hu/userfiles/file/95535195847.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/91a302d2d1bff4736494a1af0b7c6eb9/9225472763.pdfIn PDF document text
    • https://stgeorgedentalcare.in/ckfinder/userfiles/files/wogaxozizov.pdfIn PDF document text
    • https://citrasas.com/ckfinder/userfiles/files/31815079879.pdfIn PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/85682528690.pdfIn PDF document text
    • https://almavilag.hu/files/files/77047770095.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/zoparofekazepogi.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/89040293941.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=tube+play+apk+downloadPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F6 10420 bytes
SHA-256: 448b983484674c3c6b99a96c4394739ab9bb18ae303e177ddc5d33baa4f9d574
font_01_sfnt_off0000f080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF080 17572 bytes
SHA-256: 723ba31d072f41c5a4933e30e43ebca3e5a74018bfe2e53866c33835e0c47080
font_02_sfnt_off00011dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1