Malicious PDF — malware analysis report

Static analysis result for SHA-256 029e6bd9a99c5bf3…

MALICIOUS

PDF

84.1 KB Created: 2021-09-05 15:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 5238e7a3518fffc4caa5bb002bf203d2 SHA-1: 1cc1e6a80ad2cf8bda753c1c53dc1ae5e17bbb57 SHA-256: 029e6bd9a99c5bf36c8604e36543edf2274a4b4b69a762f2daa1c2ca7e549640
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress installations and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/lbd0q6mfmk6rs21j3qrlp2j5uo/94293154566.pdf In PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d13ef69c39---7198302405.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608200a5e1f95---taxomilozubinamiwo.pdfIn PDF document text
    • http://ingmarcofaedi.com/userfiles/files/lupepewexesegunatazuso.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c271d1a7463---fudedagisoketat.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/nowewilelelevon.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e24f9618eb---paralumomerof.pdfIn PDF document text
    • https://aldapa.eus/files/galeria/files/wegefobuji.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/32667658288.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/ad9ce1a0167f5d0008ea3b84f525f15a/pabumifamupa.pdfIn PDF document text
    • https://sitycare.com/FCK-UserFiles/files/wibivakuxibajatap.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e834b73b27e---zumivewajerivovazada.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/lawekebimofusubabikejo.pdfIn PDF document text
    • http://goldmustang.com/files/files/tamibivewiripiwatuniduli.pdfIn PDF document text
    • http://mariautonoleggiomarsala.it/userfiles/files/47417511709.pdfIn PDF document text
    • https://cebubigsellers.com/userfiles/file/wewarawoji.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/93331309362.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612c63920665a---78426814724.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/04c968b58223686305873b2cc40600b1/tapulojabales.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1721c66ec---xexofajuwumut.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/29927411409.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/neretafikabumametemoxuz.pdfIn PDF document text
    • http://nhatnamvina.vn/rich_editor/file/wemobisovexepoletolana.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b488190bbc0---49922656647.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=group+theory+for+chemists+fundamental+theory+and+applications+pdfPDF 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_off0000dd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD54 19764 bytes
SHA-256: 4689537ec1199a6ee6110640f793139fdfef0b66462f7bc007585169f881e2ac
font_01_sfnt_off00010fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000127c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C7 11140 bytes
SHA-256: f9d49bc75016822925e8e12a0f7b7ed089733227c4db4b498569da74dcb5ddb0