Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda1055b333ebd8c…

MALICIOUS

PDF

64.0 KB Created: 2021-09-03 15:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 06c9753e1f8f7966e35603fa0b956c4b SHA-1: e5afe82fd1bcd8029e3167c3965dbb1dc4d842b6 SHA-256: cda1055b333ebd8ccc26e7eaee695a595e5bc1690122b58f0ccb649be4273722
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a link farm, directing users to various compromised websites. These links likely serve as a lure to download further malicious content or to phish for credentials. The ClamAV detection indicates this is a known phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3846

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://crewmak.ru/uplcv?utm_term=design+diaries+creative+process+in+graphic+design+pdf PDF link annotation
    • http://www.jindatunnel.com/up_files/file/67686165918.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b0ff89b898d---96616723437.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8f43f6a51e---77624424268.pdfIn PDF document text
    • https://gulfb2b.com/userfiles/file/bewasalusiwemoruvikeku.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/rcmu3ngub3o9l6vejkg603oi03/61013395705.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/251968dcd7e08da720f8be97697b22e7/68313228508.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210831_40BB205148FED15F.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/egvk5f7jr8r2hhpuk435iu6nu4/97231817104.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/0b084c7b1ea30854fd20f667292e5ff8/11998650051.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/7c880bf813c9f81dced2006793b6ee06/jirevuxelelokow.pdfIn PDF document text
    • https://cosmeticdermatologymiamibeach.com/uploads/data/files/66797405648.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/b1f97cd0f6005b4185cd72dc5fdbdec3/dazel.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0117468ab---gerodubogar.pdfIn PDF document text
    • https://rentcar888.com/uploads/files/202109020552487145.pdfIn PDF document text
    • http://thietbianninh188.com/uploads/files/59551657142.pdfIn PDF document text
    • http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/47589063152.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ab8b7aefd---dalajozosugabelexopuk.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/073265730fbc08bc58bbed23b23d3e4a/geravisutemezo.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/rumutasokuga.pdfIn PDF document text
    • http://bptramptour.pl/files/file/93925638389.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3db8be5612---bexusuwonu.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/majejifumajizireratenedi.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e385bdcba5---jozujab.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/21241527988.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/b6925c60f48d642a62f28368beb67372/54727363493.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/daf82af2e7ae4668515a93e6a1786442/12557473274.pdfIn PDF document text

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