Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a60b26332dde8c…

MALICIOUS

PDF

95.7 KB Created: 2021-07-02 19:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: c0eeeed0ca89d9033235d3e5a15d363c SHA-1: cbe3b1a1af52c93a592476a2c1ca2aaba0a5c25d SHA-256: d7a60b26332dde8cec75e40bd928e2fef0200f01470c712bc98a7754e2b6d5b8
124 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites and are structured as a link farm. ClamAV detected this file as 'Pdf.Phishing.Trojan', indicating a malicious intent to phish or deliver a payload. The presence of numerous external links suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4823

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 http://mysistermyfriendministries.org/clients/85776/File/52293600914.pdf In PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/3chlq9ar8eq2kc5k0dr3o0ufcb/pebijitufitoku.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/womejuvekelozam.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5f3c7540e---jekanususevewirurasewevux.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afca8434555---81507174981.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/34970345616.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b578823d1a1---nokapa.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/bamex.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/a1ru3ct8ve5ouovj5pme3cq3ea/kiduleguwut.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/luj8gf2f0rl50ab4aa3mt33vvt/68662818657.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/c5585ce836b2c2e23a7dcfe01b8afdac/dezuduxumol.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842b3e75ef7---pogabopapeg.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/14230462456.pdfIn PDF document text
    • https://okna-stv.ru/userfiles/files/pofifaxolaxoferodero.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/a7d9e8f7c4c8afb63f2375190c31aef7/73719800989.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef5213c687---56620413696.pdfIn PDF document text
    • http://tweedehandswikkelaar.nl/app/webroot/files/userfiles/files/zutumixi.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/082c344f5e5b121e2c0290f1750ab66c/kelapadat.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c96c7381f8e---58890157585.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/lirubixabiguwaxukonesaj.pdfIn PDF document text
    • https://hagepoorter.be/files/files/83927564301.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/kesug.pdfIn PDF document text
    • https://vieiras.pt/imagensprodutos/file/telorikedovaxixijasozadu.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608a43e914201---33283769910.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/sc7ftc5u6006d2nbjpfco2ftpl/kumirijinubajitajamiki.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607efcecb5d53---15436692675.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=the+following+are+all+caching+types+exceptPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14325 17304 bytes
SHA-256: db72425d2fdec2e48b11152636ea0b267216b59e3dd998a93e4e5aa2fdd7df49