Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d12618068861246…

MALICIOUS

PDF

82.5 KB Created: 2021-09-05 03:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 1463bec49dd589fc5e2caa1ff3a3062a SHA-1: 881e965ca760c531daa1f06eb0ec73a1e18d04dd SHA-256: 8d12618068861246a725cb513313732e9967aeeaa8a4d35608db4e463a80d133
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to lure users to potentially malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5648

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 http://broadmoor77.com/clients/39738/File/xazeteg.pdf In PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b7368ae9795---fadunejukoso.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/rubunamejuzenago.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609069c398796---29019778542.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/5790539449.pdfIn PDF document text
    • http://st03.it/userfiles/files/98016987042.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/gifepibijubexovurefoze.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4fd24eaf6---5823239691.pdfIn PDF document text
    • http://m-s-g.ru/userfiles/files/gulifedogemiwe.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/gumulowinopid.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cf0552a83---zuvudutopugonezurupubuwi.pdfIn PDF document text
    • https://badoza.net/userfiles/file/8672943124.pdfIn PDF document text
    • http://maszyny.pl/userfiles/file/5769997519.pdfIn PDF document text
    • http://kingcraftviet.com/uploads/ckfinder/files/jilekotirezoxedupufudexo.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/kebuwigisavewusolideg.pdfIn PDF document text
    • https://dacola.com/upload/files/nebub.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6552e03c1c---47126252653.pdfIn PDF document text
    • https://editions-tlp.fr/ckfinder/userfiles/files/19067227726.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/79a7cbeb06d62b38f27feac5e4dde2fb/81634601827.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/gokotizavunir.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/4fb2107d4f2c2d791d926c003848de90/kiwotoda.pdfIn PDF document text
    • http://dainichiji.com/upload_ckr/files/dedopamataj.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/3a438867509b45c3ca0fdaf9340a333f/10185537544.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=ncert+solution+pdf+class+12+chemistryPDF link annotation
    • 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_off00010704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10704 18040 bytes
SHA-256: 92644f1d4ec269748cf2bd990a4e827614f17eaa47ab0f44395223b350f4a8bc

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