Malicious PDF — malware analysis report

Static analysis result for SHA-256 0800426cee8f0fdd…

MALICIOUS

PDF

82.5 KB Created: 2021-09-19 08:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 51118e83b7276c417be2f755a691b346 SHA-1: 06edea7e795776c8002ad8745d8810cdc48b1908 SHA-256: 0800426cee8f0fdd17153c2118d4bead84cfc261eafce4f907c648475c4d5826
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. It contains embedded JavaScript and functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS uploads or disposable domains. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://goez3.com/10005001208290177/ckfinder/userfiles/files/tepesewegasejojikuxip.pdf In PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/7004274600.pdfIn PDF document text
    • http://boldogelet.hu/media/lesaker.pdfIn PDF document text
    • https://brianspradlin.com/userfiles/file/43849004562.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/ronugufumilidudokiwokamaf.pdfIn PDF document text
    • http://e-district.org/userfiles/file/85709495094.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/ruzulapexad.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20210912093250.pdfIn PDF document text
    • https://rolcsi-bau.hu/userfiles/files/83580008009.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/96997195267.pdfIn PDF document text
    • http://maydemtienvn.com/upload/files/jaxekovotuminanovokalikul.pdfIn PDF document text
    • http://elektrostroy.kz/ckfinder/userfiles/files/risajeweletemit.pdfIn PDF document text
    • http://huyminhplastic.com/upload/files/54181641544.pdfIn PDF document text
    • https://eventaipei.com/upload/files/82272321888.pdfIn PDF document text
    • http://iranjobex.com/cache/fck_files/file/folurewefabo.pdfIn PDF document text
    • http://stsmcc.org/www/js/ckfinder/userfiles/files/xikazitipukasofokezedogo.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/jizukibafumot.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16132ecf655de6---89112409157.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142996071f49---gadan.pdfIn PDF document text
    • http://www.tomasjelinek.com/img/pub/file/dapuduzobijer.pdfIn PDF document text
    • http://phunphu.com/userfiles/file/wamorubofokatexe.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140f0f520f0e---kujitutaso.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16142f602a9de2---gopegororoxoro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=urie+bronfenbrenner+theory+in+educationPDF link annotation
    • 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_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F9 17840 bytes
SHA-256: d278e5375285f967cc0b40c937a1ca4c69b3ff4c052b38b156477bfc024ccad3
font_02_sfnt_off000123cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123CD 10720 bytes
SHA-256: 9ee10a4b10b3a27ab613306dc35a937b7169ee9fedfab57e9c234c2aee4ca73a

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