Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ba3fa5a35a9af4…

MALICIOUS

PDF

71.5 KB Created: 2021-09-09 11:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e42bdd1467902b64943447cd5ee1ac1b SHA-1: bbe6f27af8e6d02de19d85885f09b4d780adb364 SHA-256: 97ba3fa5a35a9af4d767c0ecc570dc461123f2d0f059e1356cc6c0f1f0d15951
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, including WordPress upload storage, suggesting a link farm designed to redirect users. The presence of external URIs and a link farm on disposable hosting indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6474

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=paul+vs+mayweather+live PDF link annotation
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/4f928ad8f890c54ecbd5f42f3a772f9c/94083221216.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7f5db588c---fugew.pdfIn PDF document text
    • http://flemingdecal.com/uploads/assets/file/nukapubafuxiloda.pdfIn PDF document text
    • http://creatinglifeoptions.com/userfiles/files/fewon.pdfIn PDF document text
    • http://theseadiaries.com/ckfinder/userfiles/files/jivokalawowatamevapen.pdfIn PDF document text
    • http://immobiliareborghi.com/userfiles/files/48756236131.pdfIn PDF document text
    • http://bibliotekaszamocin.pl/img/upload/files/kodazifuromevujenujabix.pdfIn PDF document text
    • http://delfosventures.eu/userfiles/files/52276825245.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/93413914929.pdfIn PDF document text
    • http://lubrifianti-auto.ro/files/file/26252606940.pdfIn PDF document text
    • http://tikatalog.sk/_files/file/18669256716.pdfIn PDF document text
    • http://homeopathyhk.com/files/45916666793.pdfIn PDF document text
    • http://cottoneauto.it/userfiles/files/ranojakasiravilixo.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/damuxesip.pdfIn PDF document text
    • http://frankifoto.com/uploads/pages/files/tedodurabufaz.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210904_E4D59EFEE6F8EE2B.pdfIn PDF document text
    • https://cet.sk/res/file/43162336112.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/66329650116.pdfIn PDF document text
    • http://ministryofrum.com/memlogos/file/46484931845.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/77528641661.pdfIn PDF document text
    • http://clinical-pain.com/pds/userfiles/files/41687928513.pdfIn PDF document text
    • http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/55028813792.pdfIn PDF document text
    • http://ourgans.org/userfiles/files/77866950093.pdfIn PDF document text
    • http://touristclub.in/userfiles/file/92254599919.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613381d6d4b5d---43363312513.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_off0000f342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF342 18888 bytes
SHA-256: 3ac92c758cc1e2afd5aeadb5a432d3563a42dc5562b0df00f19ec4107aea12c5

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