Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b3849feeea3dfb…

MALICIOUS

PDF

65.1 KB Created: 2021-06-19 20:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d6367b13444cfeccbbdc04dac732bf17 SHA-1: 0de57cf2d29959c512245ea1386e1d7627b17072 SHA-256: 79b3849feeea3dfb4840f40f2c89e8a45b6844ebe8a6ffc70ad0f5b6c4781e1f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/vdpfpnd3gfs16r9qqc10j7gi6e/galunumoxikazil.pdf In PDF document text
    • http://szwygs.com/upload/lusedawujujibus.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/48749111538.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/d35880cf6d2bc09084d316156de802d1/42634567301.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/timeparopegegijipomeg.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609038c1e637e---fokawafafamikusaxesos.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6bb58edf5---16484818551.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/fewul.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfe7266a88---zegixivuguvumiluzijelem.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/0dca1f1ecdcf74e4967af8d0d89201b2/24977596260.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/de045de47288c6abe0949f6a0df00eed/wuzubuvepibabenoveletis.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/wojeteziboz.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/xitima.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/0mnecnjit5n3bes9nlgsphp582/xivusitesenosunokikil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=pdf+to+word+docPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC426 4688 bytes
SHA-256: 2c0b956e215e6e2ce62e617fc5e502bdb6d9286c988fbee3e0696b85aeec281a
font_01_sfnt_off0000d43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43E 10728 bytes
SHA-256: 597419b4300ba8183cd52dc58cfb198c3e3ed5e8a3bc8a1d0b5fb1ce5c2ceee6

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