Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fe7a02f197efce…

MALICIOUS

PDF

124.7 KB Created: 2021-08-01 11:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c215d58cd52b55e23b257e4bdb3fe794 SHA-1: 5e00c9c6449d7e73a8c427d458a20bdaee6c4c7c SHA-256: d8fe7a02f197efce9507aa0ee97ff6fefb27f51bcea4fe170cb0ab1e12963bb2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution campaign. The PDF structure and embedded links indicate an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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://infrive.ru/uplcv?utm_term=problem+solving+skills+pdf+in+hindi PDF link annotation
    • http://onthebroadway.com/CPD/adminpanel/upload/file/letegub.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/8f69366d5d9c27706ecabefb1f6c2ac8/kagudaxezegujakinotetame.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161032fa3859e8---18260660126.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/tojuluze.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/ab03b50cbe3691490c447786e1e2164b/23782398693.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/b2d2eec0fb501a864640bf3e0319a54d/dafidisadikadajuneti.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/750c26d8cb0d9f9efc8bb1c00756ed3d/wugezapuforawamunupuzipi.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb18577f091---25475735836.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf323f01780---28816097955.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47b8e24e82---dewepu.pdfIn PDF document text
    • https://maclashoes.it/file/51827362461.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/81195272235.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5ab0d605c---tunebulifotusezilefavipu.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/vozefizesaza.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/losuzedokovowezo.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/21411033836.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16072426669e22---53816152092.pdfIn PDF document text
    • http://desagresbrts.com/clients/34568/File/8921197447.pdfIn PDF document text
    • http://fairview58.org/clients/b/b5/b5cf5456a34e3fefef15e35162a7177a/File/9830097772.pdfIn PDF document text
    • http://com123.vn/uploads/file/veborojojajurowisi.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/28edglv9ht76ns6i68kon9us93/tevosulaputiluwiwugip.pdfIn PDF document text

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