Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0ea7f237bf60ab…

MALICIOUS

PDF

80.0 KB Created: 2021-06-30 05:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ceef664d69c8dbcdb359f4bb904fa845 SHA-1: 0e23c21052958a45788d56b3d9b29442185eb9e7 SHA-256: 1c0ea7f237bf60abd8b3bcffe5ac8900576216dce741e92886d07371e35c90bb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV, specifically as Pdf.Phishing.Trojan. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the heuristic firings indicate an attempt to exploit users through deceptive links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4395

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://irlanc.ru/uplcv?utm_term=lego+dimensions+ps3+download PDF link annotation
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/303c2159fe8a2c0b2c79b3e698c6f908/redilafejasurokuj.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/j14ht46jevtrv8lpegpfh8ftt0/kakonuboxijebolodigifujoz.pdfIn PDF document text
    • http://ccshecea.org/upload/files/87794791960.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/af2626351bfced26739ab70729a1de80/88766709503.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/21b7574d3d563cdb8a2802f74f7abb02/6128285937.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5e9242fc6---85964075882.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba1c69c42---45144678881.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2bd065f6fe---48053157224.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/dedebu.pdfIn PDF document text
    • http://msamericapageant.com/clients/873634/File/dutopen.pdfIn PDF document text
    • http://cosyromania.com/media/file/26140309739.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202106141815288573.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/929c8d9a65b4c5f946d8c2c70872bc1d/9317829362.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc72e80fb1d---jesekoditimajewegegawaro.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7704b5e412---65661313329.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/soduxosajenef.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c1cf8cee499---gumikagatilazifexunun.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/lujosojitikikal.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9df56468b41b2d0c36d664378a68cd19/guginobetovoguw.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/54329978285.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a120bed2c---guxupenejinafegafepikibeg.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/zijorimitujedopewezefojo.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/06/20/file/38159093098.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082851dc1042---likebiluxunubenunarave.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/042e3e4e73a14290b02dd57866606787/71557295338.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160928ae252f94---vanawedavibo.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/69c71ed26d36785455a238a086432e64/60780851244.pdfIn PDF document text
    • 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_off00012220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12220 10752 bytes
SHA-256: 6f4f14eff94e9de30aec9e890624c094ea6ff6edcd42c48418961036b23572ee

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