Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86600c1506b4c90…

MALICIOUS

PDF

70.3 KB Created: 2021-06-12 22:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 832d9736812db3662775307fc3f5ed7f SHA-1: a803b1345cee927866e793dd9e5b2a7694900d7e SHA-256: b86600c1506b4c901f236e3cd4af9b3010180e6fd090cfa37b258e69358996bd
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate effort to create a link farm for SEO manipulation or to host malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

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://wastran.ru/uplcv?utm_term=onlyfans+plus+plus+apk+ios PDF link annotation
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/6v3a47vjbro0p47plspr01aaq1/82443537611.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a692703ec1---25520489500.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160945e732b2e5---mobunejuxiloji.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/bc5fcb3855f8c3ab6dfdfa468bad5c8a/39125502411.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/8beaf3897fb6ce8cf479f31c433c193e/63003644880.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/4629776498.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/dc880a64515fbf918c8ec88abca8e491/70624288436.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/luzuwinonurapabururopago.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/40876246825.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/6ff7aa4052333e5fa5a045e55b9c791d/fotusiweruzone.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/h69vpf0d5qhamsq0q7i7bm1re5/45033868603.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ed912c0ce---nozidaredegilaneweleme.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/1e764200c881945ab7e063d2af1b5291/31453958832.pdfIn PDF document text
    • http://jullien38.com/ressource/site-image/files/wepoberawizoparonano.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8475ddce1---52549931215.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/61740309357.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 4992 bytes
SHA-256: 1467f2ba560b1460393ac5e64b7e9a4f7b0e558cad691cb4043aea1fd73caa21

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