Malicious PDF — malware analysis report

Static analysis result for SHA-256 969709a1b24e67f2…

MALICIOUS

PDF

100.1 KB Created: 2021-06-27 01:58:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a720a7b2b1b1619a488d30e050b55ab8 SHA-1: a4906f6df0c73853a926580360c13fe70a31d34d SHA-256: 969709a1b24e67f249a79b9155ec93a03f4cc370099b28eed0f54bc53f24d8ef
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised websites and potentially malicious content, as indicated by the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, but the structure and link farm nature point to a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • 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
  • 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://boxerdapolenta.com/cmsimple/images/file/vemalonozesiwigawezivizov.pdf In PDF document text
    • https://agrilaui.com/userfiles/file/lazika.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/160993da9e04ed---53830317620.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/16074d3ec2aef4---2863821287.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/87ef65e7174ff9c1c6469f7e56d6fc16/67294254830.pdfIn PDF document text
    • https://abhimaninteriors.com/ckfinder/userfiles/files/sapabutavetufupanex.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c05deaddf6a---sowekudubupakezulipaxeze.pdfIn PDF document text
    • http://studiorampinelli.com/file/ximok.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/3b91addce9db5e1bbb30b47bd90a1d08/47372567742.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b80521530---kewetosigetiguxevup.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af44398814---37676026730.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d354963500d---29640135192.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/pokinagujonikali.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/xatuxus.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851237d26a9---vanekuzajilaguv.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082fdf7b3886---66774643346.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16078b93baddf3---sisagonevis.pdfIn PDF document text
    • http://aplus.to/userfiles/file/52995495805.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/samewezupinaledanisuti.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/b0f838c85274a8c7e20620c8f6b6c759/wavegig.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/sozixoxisuxagikakigo.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d714eb6b3---finulolujonofikiwup.pdfIn PDF document text
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/83a3250d40292d4df3d7e106ba06a1c0/39492834921.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad98c71c5e---zekexemilolopaxo.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/91500612023.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=brotherhood+of+the+bellPDF 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_off00011c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13482 22108 bytes
SHA-256: 62cde74d95b637417cb289b22008d2d33d3ca9742b697b4ae11bc21ab8e10f55
font_02_sfnt_off00016d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D05 10120 bytes
SHA-256: 0c7b939fc1d38971500d8098a8e44175ef2a8a121b7fb595f6e8829add515e4e

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