Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6057c47c2cb4658…

MALICIOUS

PDF

64.0 KB Created: 2021-06-28 12:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 38ee72c40b7c78c8c1d048778d1979df SHA-1: 2bb059117cf554a951f05f54b5e3592904f5e51b SHA-256: a6057c47c2cb4658aae57aa2f791d9294becdc3fa6f802aa8dc87784452eea82
124 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to websites that appear to be compromised WordPress installations, identified by heuristics as a link farm. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to lure users to phishing sites or download further malware. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/fce8614f5b37e60daccee773c9897f98/96131383064.pdf In PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/drejrm4t9jin9halpcg68floc0/bokezapirare.pdfIn PDF document text
    • http://musicpark-live.de/userfiles/file/sidoralu.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/4482c0f20423ba7c994a006f72e7c367/27706334573.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfb3aa23be---bizekibumesijakumadatas.pdfIn PDF document text
    • http://applexin.com/ttpsea/files/file/69357820029.pdfIn PDF document text
    • https://jakspravnenapsa.cz/userfiles/file/julimaxi.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/1517a3efc0da4ee2538c8ffd6ef21555/55806476437.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/8fd5p5ldh8j3ue2r933jcrmmsf/donaluxigobar.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a98c8919ce0---faxunijog.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca85cfcdf66---zeluwaleverutopotifo.pdfIn PDF document text
    • https://bdaudit.ro/userfiles/file/80068911982.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/77939299052.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/muzalopo.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/393dd12da713852cc8f14ffe57478925/35710834060.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160775ace5a1f1---pobebesop.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/0613d1d1b6c8ce7226484b3ded1f4f9e/viziru.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-6-20/20210620120823139297.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087e3e850108---54310862149.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/268a8cf6a4fed5a0ffa86a5022f543ef/88016526555.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/16802115815.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/ce3c3b2d399b0976355f5d8b19f7bb6b/zaparuvukogid.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/sqvdfrn787c96s69j2pnucek3t/88451222479.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/borupupid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=meaning+of+a+stormPDF link annotation

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