Malicious PDF — malware analysis report

Static analysis result for SHA-256 35e0c71d1284060f…

MALICIOUS

PDF

47.8 KB Created: 2021-08-29 20:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9218b2fe6e1cb18c13fd77bd9b7c6377 SHA-1: ff2703ced36661b6e2cfd10dd1a6e2ec41c4a753 SHA-256: 35e0c71d1284060fa4864f89944537b026a0dda44f399d7347630530b11bbffe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous links pointing to compromised WordPress sites and other disposable hosting. The heuristic firings indicate it functions as a link farm, likely intended to redirect users to malicious content or phishing pages. ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=the+two+main+composers+of+impressionism+were PDF link annotation
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/8d34dfe272b91fc1cc8035dac4f92d3a/japuwutuvipazamijaji.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/04414798f6effca93867d2873a489c35/23018807853.pdfIn PDF document text
    • https://aokman-drive.com/d/files/34306544913.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/2cbae7080588f40cf5538e1acc03b357/59479172958.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/1lp1qi0rrtdl0t846oa9rclo4m/zuvaj.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/50868041786.pdfIn PDF document text
    • https://nicosiacaffe.it/file/98465463672.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/1e97a930c5739d1dd2cd2978794a18dc/16364657036.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/dofetoliwodifoxegab.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/2086932897.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/1b1a590fa8f0eda20848e5f03eb70880/wubivativifovad.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b622322b053---13365695665.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/7e6d4f4b432354588d48bff7453d2e37/16323784093.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/68755379311.pdfIn PDF document text
    • http://carszana.com/image/upload/File/topozowipuxati.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/29ee0e3e9eb6119dddeda6ad228a69d4/44152377035.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd66e9e5dc---15306819088.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/90000668083.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/794def5154df319fb66eb8d53c81cac5/35398949874.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078fbdcf2c10---30395443870.pdfIn PDF document text
    • http://dorrstrechy.cz/UserFiles/File/pemixezoxotu.pdfIn PDF document text
    • http://ediliziaunoaventi.com/userfiles/files/kufemuti.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609fabd95f13b---88798306340.pdfIn PDF document text
    • https://cailux.lu/userfiles/files/kemudefidutuzotoburijag.pdfIn PDF document text

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