Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f68ca78d35ba58…

MALICIOUS

PDF

92.5 KB Created: 2021-06-30 13:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7030e172f2e9ae6d756a49798b067271 SHA-1: 15ed1ae9536e3dc2358440a1f2e48f728cfac4ab SHA-256: 69f68ca78d35ba58187aee1446ed25fa79a36279f302cc7b3f69a407eec550c1
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics indicate the document functions as a link farm, pointing to numerous URLs hosted on compromised WordPress sites and disposable domains. These links likely serve as a lure for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/3facc8e920cf490fb0cfca9088c965a7/xebijugixuporo.pdf In PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c244ccdd6---vufuwivedukatib.pdfIn PDF document text
    • http://polyalpan.hu/_user/file/suboxejaj.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/52eb3257496bc4ca773a74d9046b18bc/33350713450.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/b31577f95f37302d0c4c8e5425034b22/32335138201.pdfIn PDF document text
    • http://patronusalapitvany.hu/public_html/upload/rimamosuziseragavif.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf96b1d8fc---dedivabixutina.pdfIn PDF document text
    • http://jmlukanich.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/2861544518.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160801566b469b---44447744958.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/921aec03c09c569fce0e0e636e4abba3/wavalopulijawef.pdfIn PDF document text
    • https://diarch.in/WYSIWYGImage/file/mupowezibu.pdfIn PDF document text
    • http://rld-carbon.ru/file/92497881758.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/fivezodum.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/folaguxowusibijuvisevele.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/gokejilalojewig.pdfIn PDF document text
    • https://hgb.se/filer/file/mofip.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b23684859cf---tuxanozusomegog.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bdffbd7908c---24759533129.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606f32d196bd8---44548860412.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/iubtk8638t5o5nob37s9im1jr5/xegiwoxisoburegelid.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/a55454a131187a8a9a30c78dc9d58731/72104045369.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=godzilla+king+of+the+monsters+movie+onlinePDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/437f60d67a9598b6f225f317b763508f/9238137069.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10766 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7D 11060 bytes
SHA-256: 13f807e2a0a632f8dbbdeda4c28b2d86c20d6fc05c0013d4b5cb3f7e9c93d691
font_02_sfnt_off000138f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138F2 16868 bytes
SHA-256: c977b49c6cd4febb2748fac75fd1f01d9a1de2904f7669b91b7047f6fb6caad2

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