Malicious PDF — malware analysis report

Static analysis result for SHA-256 711b377b6b319e13…

MALICIOUS

PDF

58.1 KB Created: 2021-09-03 17:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d7d65d70ce4452ef32e988295ee13ff7 SHA-1: 046119b9f97a24b3ef925a7f9ee0b64fc0300ae1 SHA-256: 711b377b6b319e13a172e1c51d1ccba375237e2d86cae68134da3fcd49f7d213
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7488

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://wastran.ru/uplcv?utm_term=basic+muscles+of+the+body+worksheet PDF link annotation
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/e2437370b25d20fc701f8645a2edcd6c/guxegudovowibodotan.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bba1db639d---89993177488.pdfIn PDF document text
    • http://vinaaquachem.com/uploads/files/pinajuseranunetukuxa.pdfIn PDF document text
    • http://rjbmachinery.com/d/files/45827734913.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/161170a0951073---wowiwedageverix.pdfIn PDF document text
    • http://diagnosticaedilizia.com/userfiles/files/varutojoro.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/98967640583.pdfIn PDF document text
    • http://atomleasing.ru/media/File/relidesox.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/sekuvozejex.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/zinopabibixuzopem.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/h8ur8vpc344edpsblk3sfje45s/fivedukajinomipulomanut.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/20a098ca18791ea0693ba4038734447a/zotugulixidelubuxeka.pdfIn PDF document text
    • http://tramtronbetong.com/uploads/userfiles/file/35064904927.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0430e20a1c---jugopigodevagajowupevef.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/kebepivibubojodatabefew.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/wolenozeniguxesotevutubi.pdfIn PDF document text
    • http://winhazel.com/indigo/ckfinder/userfiles/files/70348683245.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e08783d3294---pazozosubigogapetafe.pdfIn PDF document text
    • https://evboosters.com/wp-content/plugins/super-forms/uploads/php/files/2a5672cf98db36c7f611fbcf0c5597d0/96319685682.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160729b857fd8d---22816559866.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/24543328238.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081fa0132947---kisakosabuxujipanifuzedu.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b62c11ee35e---fimowedelojob.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_off0000d27f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27F 11220 bytes
SHA-256: ab488fa5c620288627dc81a78212b86d8600f7c7a284e41a05ae3ef700575b2f

Open this report in the interactive analyzer, or submit your own file for analysis.