Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad623a97c411f89…

MALICIOUS

PDF

67.7 KB Created: 2021-07-24 04:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 2786f218692e597821963d68bc58041b SHA-1: d83d8d12226fc8ed2a468889a2f03df785d1a49e SHA-256: 2ad623a97c411f89a6be9f8ced5a6bd647dabac0705fe37606900d57c97df3b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.8021

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://wickedcheesy.com/images/file/19767457336.pdf In PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/cged1gqob3ce0v5eem6n29jtg6/14899283057.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/5e4ebad2eede8e93d183c5e68495a947/gewuviviwivosumuxotosojaf.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607daac056ea6---90344570595.pdfIn PDF document text
    • http://immobilieninvestors.de/userfiles/file/94878693187.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16072c516f1123---vamopamekegexumamikebuwas.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/61f58ef45831222e92a3bbd64b109a0d/92400792444.pdfIn PDF document text
    • http://loaamtran.com/files/usersfiles/files/tufed.pdfIn PDF document text
    • http://englandmatchshirts.com/assets/file/13035853437.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/dipebapipigufaz.pdfIn PDF document text
    • http://studiovalentini.eu/userfiles/files/vubafuzaxuja.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/kipomuxenukuriwaja.pdfIn PDF document text
    • http://pinzimoniofiumicino.eu/userfiles/files/lewumikisuxigudux.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/vurupofiwokexipixoguto.pdfIn PDF document text
    • http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wikojasarinutevulexani.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///14952217732.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc5a94d8dd---54721567479.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c4c4b1a0d---wumakitamesev.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/gerekulokat.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/37324e870f15952a74ef436f324d4ec8/64596348787.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/72756581123.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+always+get+flint+from+gravelPDF 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_off0000d1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BC 17884 bytes
SHA-256: fb1258d186ff744c52f037a49af6e678ef96edd9507f91cb3ca41d45076371a4

Open this report in the interactive analyzer, or submit your own file for analysis.