Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4300986f505da1…

MALICIOUS

PDF

69.1 KB Created: 2021-09-08 06:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ec8d80b4bb964d14564a97058af8c020 SHA-1: 8d558c7c9e2d1b9eb2a25087d0955758783b2dd8 SHA-256: be4300986f505da1f947dbfc8ca37c9113d5f095b24b6064f40aa61280e7db38
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm pointing to numerous compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to distribute further malicious content. The presence of embedded URLs and the overall structure strongly suggest this document is part of a phishing campaign, likely using spearphishing attachments as the initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

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://qualitymattressfactory.com/admin/userfiles/file/27942318595.pdf In PDF document text
    • http://naphogacomposite.com/upload/files/90400208902.pdfIn PDF document text
    • http://teaandtiarasottawa.org/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/visawomotuk.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/53450202273.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/161176c0d438b6---20872204966.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/e1orur6kbg5f9f2tiklpr9to35/losawefowelejavorujevosi.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/81558744907.pdfIn PDF document text
    • http://mistral-paints.cz/userfiles/files/3089837010.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6a3af1623---13146330030.pdfIn PDF document text
    • http://tubemakingmachine.com/uploadfile/files/sogopofixezima.pdfIn PDF document text
    • http://www.humillacionyestrella.org/ckfinder/userfiles/files/55235734209.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/4e11e0d5c0ba47588e4fa328e7a6853c/wetowovujoxebububup.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/3babb1aa255a9ab16baa29bf8fca2a08/68074492628.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/dc866756f68028c6d5b89045623f7afb/raxokimafipafodifixuno.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613502d726bb8---mulum.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/53415586490.pdfIn PDF document text
    • https://olterus.info/contents/files/tetomejuzomututetoxa.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/83582244763.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a77359e729c---wodexuruluvetidanuzedav.pdfIn PDF document text
    • http://landroverbh.com/ckfinder/userfiles/files/39255878751.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/boxuvudi.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ff4760676e8---lirimerefowonawi.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1611ab22c07cc3---65479795019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=pradhan+mantri+kisan+yojana+form+pdf+downloadPDF link annotation
    • 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_off0000f30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 11056 bytes
SHA-256: 0af4971d2a3045110f441ef2af9f3b680ad2f00557a821499546b9de61f8aff6

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