Malicious PDF — malware analysis report

Static analysis result for SHA-256 00cc040dcd1c3907…

MALICIOUS

PDF

63.6 KB Created: 2021-09-21 06:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3ec5e35791e6b50b5788fbf5cfdb96d0 SHA-1: b304e44353ab0fa7aeca4346b446f9392c25086a SHA-256: 00cc040dcd1c39079c4131ac9b9eec1307df0ea6a18b36f2e7b018bddd1e3550
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to a variety of websites, many of which appear to be part of a link farm or hosted on compromised infrastructure. Heuristics indicate that these links are used to distribute malicious content, with ClamAV specifically identifying it as 'Pdf.Phishing.Trojan'. The presence of multiple links on disposable or compromised domains suggests an attempt to lure users to malicious sites for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7025

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://infrive.ru/uplcv?utm_term=god+hand+cso+file+download PDF link annotation
    • http://emekyesiltepe.net/images_upload/files/nebupigurogoxoxutudu.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16135fa1911701---wovukefatorefilifurisa.pdfIn PDF document text
    • https://jmcoverseaspvtltd.com/uploads/files/gatosukope.pdfIn PDF document text
    • http://www.petercar0937494634.com/upload/img/files/badopapaw.pdfIn PDF document text
    • http://oticonshop.com/ckfinder/userfiles/files/fofiwiw.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/gagakunezabavatatufujaroz.pdfIn PDF document text
    • https://abicecream.ru/ckfinder/userfiles/files/fewukoxokidatawuditadu.pdfIn PDF document text
    • https://transmilenio.net/datamont/userfiles/file/kazeroxovojegiwosomaxefaw.pdfIn PDF document text
    • http://www.oteliapelsin.ru/ckfinder/userfiles/files/duruzakabofow.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/mikel.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/31969540056.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/ee10547bcebf9a785184cdb83e7d5429/retaxof.pdfIn PDF document text
    • https://loppisidjupdalen.se/images/uploaded/file/lirumojozura.pdfIn PDF document text
    • http://wonderpanel.com/app/webroot/img/file/52869423562.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb02f52ee8---wutotobijojajanobuga.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/d159d062661a8f660854f25984937fae/55522099785.pdfIn PDF document text
    • http://tongshengchem.com/ckfinder/userfiles/files/45457424515.pdfIn PDF document text
    • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/47878803967.pdfIn PDF document text
    • http://esen-life.com/userfiles/file/jagivijir.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/nemusudotumokawalo.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/63ae0731ca6d5edaf069b1fa25361af8/376830961.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16138fb8459e79---77337783641.pdfIn PDF document text
    • https://clarkfamilybuilders.com/home/clark/public_html/ckfinder/userfiles/files/mupabuburetagufip.pdfIn PDF document text
    • http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/kuseziz.pdfIn PDF document text
    • 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_off0000decd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1