Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0464c8256a0af98…

MALICIOUS

PDF

87.4 KB Created: 2021-09-09 03:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f52103bd932f10ddcd12dd991cd96174 SHA-1: 9b30cbb13d35304ea2bd1579c2a32f1baf86ca59 SHA-256: b0464c8256a0af987211d43da50a96e468c6337bc4faeb4981086318ddcfcf2d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • 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.
  • 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 http://surestegc.org/documentos/file/65106119262.pdf In PDF document text
    • http://sevennews.com.br/ckfinder/userfiles/files/kerakojadiwa.pdfIn PDF document text
    • https://wanfutemple.urwaydesign.com/data/file/userfiles/files/47098307442.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe6da8fc93---86837037043.pdfIn PDF document text
    • http://obras.ru/sites/default/files/uploads/makawajofunisebeti.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16138135d019b5---4073231583.pdfIn PDF document text
    • http://ejmk.com/ej/upload/files/30927010593.pdfIn PDF document text
    • http://burragebrothers.org/demo/jolie/beta/userfiles/files/suzufukitofoga.pdfIn PDF document text
    • http://sb-78.ru/files/file/16512361174.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/damiwafubuvovis.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613886d4c1c57---18135931107.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/lawamelofuso.pdfIn PDF document text
    • http://newgoodluckcrane.com/admin/uploadfiles/file/32533981870.pdfIn PDF document text
    • https://jeevandeepspecialcare.com/ckeditor/ckfinder/userfiles/files/48631940718.pdfIn PDF document text
    • http://all-vehicle.net/js/upload/files/zaxatexijo.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161355ac319bbb---vezojukixitebewobulanibaw.pdfIn PDF document text
    • http://hanaelectric.com/userData/board/file/dudivutif.pdfIn PDF document text
    • http://warmistore.com/userfiles/file/xukesamulotimu.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/sopari.pdfIn PDF document text
    • https://santa.my/images/users/00000000/files/mijopajufu.pdfIn PDF document text
    • https://pjkconstruction.ca/images/file/88764825403.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=roms+de+pokemon+para+android+en+espa%C3%B1olPDF 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_off0000eadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADC 19644 bytes
SHA-256: 31fb30bb9481341dfd9a09743fc7d8d966673c886af6ffff9938ceca3336cb89
font_01_sfnt_off00011dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000135c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135C3 10800 bytes
SHA-256: 2b65a6ed679592cc37a39ab19c73445b307648abd7d332ba1865f7faf8cefee7

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