Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4374da8b14b231b…

MALICIOUS

PDF

58.1 KB Created: 2021-09-04 17:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 0162e457be7123e6961be37244b4bf1d SHA-1: 29530cdbb00c0b25461eb02a6d9bdbaeb053245d SHA-256: a4374da8b14b231b3bcafd8243b26bfa54a2ef5a4e8b5b4f65fe803ad7daa119
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, many of which point to compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings suggest the document is designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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://crysiq.ru/uplcv?utm_term=ppap+documents+manual PDF link annotation
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7aa5127f36---pesomemunutinitozofefa.pdfIn PDF document text
    • http://geraldinekilkelly.ie/lexote.pdfIn PDF document text
    • https://robert-zauer.cz/userfiles/file/69781745880.pdfIn PDF document text
    • https://brod-plovdiv.com/images/8666140030.pdfIn PDF document text
    • http://graczeonline.pl/userfiles/file/57588630999.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7ef457846---46097751471.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160940b9688eaf---fatilupexoka.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/33u8dekut2hjq157ene7nvfqi3/25541877887.pdfIn PDF document text
    • https://brod-plovdiv.com/images/supoxobutamevoxovorepuju.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/80473598424.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/vipebewusemazexodulokol.pdfIn PDF document text
    • http://chinalabware.net/d/files/dewetemekufotonosek.pdfIn PDF document text
    • https://jamurgoreng.net/contents//files/xafibabesovelove.pdfIn PDF document text
    • http://edsmithestate.com/clients/8/8f/8fcea3baa00381bb68ca4dcda22eb4c7/File/36320266582.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/mopiburaji.pdfIn PDF document text
    • https://anjingliar.com/contents//files/wopedojukorat.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160875564bd748---mobimafes.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/burupepuwisegupomefe.pdfIn PDF document text
    • https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/fulosuvexitanadepirofovan.pdfIn PDF document text
    • http://csc-0411.com/userfiles/file/20210616091839_gz9m0a.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/vilukanixo.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/5m26vlkqakc8uda3a5v68nvjsb/46308898431.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/hds4fqclc5s14gidnggpkcaa6u/57191320301.pdfIn PDF document text

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