Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc1c697e1eb7ca1…

MALICIOUS

PDF

214.2 KB Created: 2021-05-23 08:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: be226f4d92ec4a59cae789e87fab043a SHA-1: 005bfc0ff3469c06d9e1221515d3971852545bcd SHA-256: 4fc1c697e1eb7ca17d43d59dccdef6d7fcb8407e846bfce76ef82bc60328cbec
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8997

Heuristics 4

  • 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.
  • 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://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/e19fcc4092aacb74e3612789083826f1/pavasut.pdf In PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/2f7125b2eaf0efed50efd05aeb724760/paliwo.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609018de24ced---sizudalovev.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765b591dd9c---3056901846.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e8fef2ab7---pobazagapogexisalanevu.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c48e41f40c---dalulawi.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/40e8b9cb858dd5802e44183ae1f079a6/44988916530.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7f62e7878---jomibokizutemisusexal.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/83977113411.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/5b298dd6d21c7f136ea5811a7f69f8ce/zaragokeme.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/2k393s81u6feulfnsh06c53phm/27883399883.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/2729c1dba70376b2f1f14aa7b6260a46/fikevadifisotagojujanak.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/h1mulmgiti5ljls8evr3mm9e13/zozarasadifafe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=o+level+physics+electricity+notes+pdfPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003165f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165F 5012 bytes
SHA-256: 3107572ffdab222350261d392853d0582a5f7d035eacdaf7ab2db5777efc2aba
font_01_sfnt_off0003276d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3276D 13760 bytes
SHA-256: d10686f7093f2dde44a6bec6109f021c13379403a73ee63cabe221d59e082c73

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