Malicious PDF — malware analysis report

Static analysis result for SHA-256 e320b153544080db…

MALICIOUS

PDF

79.8 KB Created: 2021-06-26 07:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9e051ed57233d6276bb969f565cf5dc1 SHA-1: e23202993a3a6117e86ecc39e3a176ab91a0ac78 SHA-256: e320b153544080db42fb1926443e71c5d57129ce6932c4b6ef9f742add4d44d3
124 Risk Score

Malware Insights

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

This PDF file is identified as a phishing trojan by ClamAV. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other potentially untrusted hosting locations. The embedded URLs suggest an attempt to lure users to external resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2676

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://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16078076c8b86d---kuwuritarugesa.pdf In PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c66f5584984---jejefivajidepegutavus.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/nufavojevawadikuviliki.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16090d7f91c504---malelavajoles.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/73b0dd14431ebb0fc362dfed9baa8d8a/bikuxe.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/d9f39c74fc4e44550dc5d6ab40bec5db/95905528297.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/33441923831.pdfIn PDF document text
    • http://budaikepkeret.hu/uploads/file/95651574694.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/futurus.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/21950292317.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/2c7aa11e70b9b37dacb49e5a29f8b086/29772024817.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/0b58951f15d447036a48b5ea2bc503ea/mulegepunigoxetukedoloz.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609a64cc992de---wovusibigesetufujaza.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/743f65a484f50a82b4541705c5a5cba9/9909345047.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/e6r1o41ha3pmigfhmis3ahdkto/12526601535.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16099fb21f022e---verimuwekekafixetaxukelu.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/267c243beb0c10f7404de697874bfefd/xomisewasedapijow.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/20826134698.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/40d0d2434fe5a5c69efa8d69dadf2d75/wuloja.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a3571e21525---dulenaturejesujidumuba.pdfIn PDF document text
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/3249c9c81a682e7871ad4414031291bf/xotimovokamesa.pdfIn PDF document text
    • http://cuatro-pr.org/sites/default/files/file/fasabenesowidomoparujip.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021052513364873499.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d783bc7c6---42223713529.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/runutikagerabiwudawoto.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/43984814166.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=pdf+viewer+for+windows+phonePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D9 10440 bytes
SHA-256: d658043ae0980a76eb9a073c9d7b1e3921e6e23855b174b05b1ae41f080a0aff
font_01_sfnt_off0001087a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087A 18672 bytes
SHA-256: 716c0a6e23fe4af298674883313ceac90bfab6b2b4315599753cf8897deef009

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