Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c76ebb1220b984…

MALICIOUS

PDF

118.0 KB Created: 2021-07-01 09:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d28d5113c86990b0ef9611000b342ce6 SHA-1: afe4b7f180c441d7a46865c8e5821cdae2240110 SHA-256: 07c76ebb1220b98457e8cb88277e702f79780a9af9b137c60cbf469d3e005e11
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document identified by ClamAV as Pdf.Phishing.Trojan. It contains numerous links, many hosted on disposable domains and potentially compromised WordPress upload directories, forming a link farm. While no executable scripts were extracted, the structure and URL patterns suggest the document's primary purpose is to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2565

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://mytalk7.com/_UploadFile/Images/file/waborudukib.pdf In PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/193f0a5326d6156f49ba547d98782051/40370374377.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/cg42dkusekondr3pi38uihco96/35750605253.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/040c581d16746063fd679f89c16542ff/jedaxex.pdfIn PDF document text
    • https://biocoils.com/img/file/6049772392.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/a1a13ea27280ed1b778ffd4fe278ddef/rekoxuduboloxete.pdfIn PDF document text
    • https://psystat.net/candyticket/uploads/page_images/files/70836563594.pdfIn PDF document text
    • http://www.radiooro.com.mx/media/images/uploads/files/xowezedasixap.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3e1a812e90---ripokuzuluduvomavilolo.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/kaweb.pdfIn PDF document text
    • https://actorconseil.com/files/file/81156463632.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160db9a2f5f6a3---kanotidepuxemuge.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5beaa9dc03---56310346479.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf4bcf9de40---nuvinanezuvukim.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac36aa8fa20---felesifov.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/81785778897.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfa4e8575e---nenifunopilowezu.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/23e7ff6bae991f51db9560264d6f236f/rowaferurimuwivifim.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/7mv353c621off8ntiimnloh831/vimanonuninunurazubobanop.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/531e76a310b49975f32b313385281bf8/gidaxojug.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/5d70084a1f47c6363ef964298f54eff7/90511932928.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/36999239547.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/8abff4d65da768a32b94d16fa95f4c8a/70037260706.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/ae269ca903fba09bfcb013a3376d86ff/1663023042.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef8b6304cd---58223170505.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=fluid+mosaic+model+diagram+and+explanationPDF 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_off00018e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E31 11036 bytes
SHA-256: 22c50e27c80fc7b974306b125e00e774f80eab17be498464dd79e7715b1ea71f
font_01_sfnt_off0001a7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1