Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26d0304eab84741…

MALICIOUS

PDF

66.5 KB Created: 2021-09-06 18:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0e2924afbf57cf3f0db807bf37b3b6f7 SHA-1: 3be6bb777cebb620f571d19511eabea1cdd55616 SHA-256: e26d0304eab8474140bec380d3a33f9fb866478d6e552a8ccf1aff3bbb332ab2
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to multiple compromised WordPress sites, likely intended to host and distribute further malicious payloads. The presence of numerous links on disposable hosting and the use of UTM parameters suggest a phishing lure designed to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9198

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://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87a3f1858a---zanixajubegediv.pdf In PDF document text
    • https://auto-rujo.com/images-editor/file/13115967694.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c17f4a40ef---84485402261.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160903d1f31b63---womoxap.pdfIn PDF document text
    • http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/gevewapukodulajebogom.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089207f0f686---43556794146.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/161221161738f0---70390244017.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/tujolekoberonupike.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/dbb7f5f53c5db4a788ef5a6d5414485d/xusene.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16090f868d9fd7---63063586767.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/6b5416dd5af6d6ebe425e4ae328dd94f/norurazupafudajawemuzodut.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/0ji3j4ovkpu5tl07a1mn2k9v9v/bipowazozebemuvawu.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/zilefure.pdfIn PDF document text
    • https://karpataljaturizmus.hu/upload/73041385989.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ca5f0c15216---53104162204.pdfIn PDF document text
    • https://transilvaniafishing.ro/app/webroot/files/userfiles/files/repalutekirazibuvupu.pdfIn PDF document text
    • https://makanbanyak.net/contents/files/tomemakuwesasetowusamili.pdfIn PDF document text
    • http://studiotecnicoforace.eu/userfiles/files/jinefevokagepedobesapi.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fdc727599c---28141871322.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/e841bd03ce3788b87c7b03213ef9b96c/4714720273.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c060ed0315b---29390029581.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=raise+me+up+lyrics+pdfPDF 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_off0000b2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD6 17856 bytes
SHA-256: 258d43e9ef5f0277795deaec795a3e5c638da176c14cb8808e28a9ba9c1198e4

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