Malicious PDF — malware analysis report

Static analysis result for SHA-256 2801d75acd246c57…

MALICIOUS

PDF

205.6 KB Created: 2021-06-07 03:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 70b0feb992a894f4de407eced171ef62 SHA-1: c499704b5a3a1cb04ae3d78139d858323e71b5d8 SHA-256: 2801d75acd246c57c245231b0e9ba69293cd213fa86e6776538bf5bcf673ce59
124 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains a title related to incubation periods, which could be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9603

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://huntic.ru/uplcv?utm_term=periodo+de+incubacion+del+pajaro+cuclillo+y+ambiente PDF link annotation
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607240e8d1918---lelixetutadunat.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/0aeff1df9163561b397851cef3adb04b/refusiwikiv.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/vge9mv47km52trb43vahh7hdb7/siwar.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/p5pd29k5jn0kairaik0hu6uqol/25831206613.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/5de2322aa79964ca7362928eb7871ed5/povuz.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/turasevusagoximebe.pdfIn PDF document text
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/b8707490cd3d03905be5cb52df25acd4/65923427996.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/ae4jl69l6o8llv3ifeffkq82gk/6414261795.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/6868350b1bc5f7753b0d458e57e7db29/38868506747.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14e7600fec---tuviditoletejunojuxezuw.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/wosetaxelimobetobag.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160787430ecd04---99850934531.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/48f26e3f42e1db6955b6374d0cb7bac9/jilujasawufubifapimut.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baaea30d68c---gonub.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ae126360f8d---22146091677.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16076206f8fb6a---84968613984.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_off00030bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD4 5360 bytes
SHA-256: 893a427d5061feec0eb592127b11665f40b9047dd4fd0e5292a32fd6dc8664bf

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