Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb0a79e5ced04b8…

MALICIOUS

PDF

73.4 KB Created: 2021-07-04 04:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d5816afe036d5172dcf82ae17b28a986 SHA-1: 02c868c52e1e9a6ca950ac2ed9efbf13fa3c0cf0 SHA-256: deb0a79e5ced04b8035274691b0f0eb1654568478eeaf2e489fdf7bbf6e0cac4
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to lure users to malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely for phishing or distributing further malware. The document body is unreadable, but the heuristics and URLs strongly suggest a link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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 http://brandnewgoods.net/userfiles/file/55882778715.pdf In PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc0ab5f77f---31213937423.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/8900fcdfe524d3c075f2d4fa7da883b6/bofaxunomagesa.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9d94598204---sepururutepumaz.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-8/20210508180652752364.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/hgh9lestibjd07nticbna1dfg7/lotifumuzezuvidulus.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/140a4976e402b9c701b3f4f65f62e355/begiwasapiruvepotutaze.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e171b8db2---lofibefotumomilunevikika.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160a3bcbe41151---ledonarujizerixesiliwa.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/4e58291aab15a508ddd88a6e896f047c/13294706476.pdfIn PDF document text
    • https://genimmigration.com/viking1/uploads/files/zexemutowunipakofuwi.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16080349495d0e---92588624116.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608469f240abc---82597033468.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/f8h9c2spl8rn2c826bin4o8pd3/20751700816.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/10583506700.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/widewu.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ff6a93caa5660e28912b04ea1517e7fd/nadonadig.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/d73dcde02d82a31c167fa204d035e381/68033949216.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/i18c5md4r0mur1bg1cg6jafp6u/xarakikeguw.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/92328343156.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/49a74124ba4494a38d879ec157693d70/kilexajubusisenulixozopi.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/k82ff5j2nhafe7d59vsaur9mo1/lapomomor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=can+unicellular+organisms+live+in+any+environmentPDF link annotation

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