Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e8a7ea726b2c48…

MALICIOUS

PDF

85.6 KB Created: 2021-08-04 16:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: be33ae02acb5c5dee7b79d04aba41dab SHA-1: 22e16f09e2021885b5e4cd129926ce1c53c076c4 SHA-256: 14e8a7ea726b2c48e5bb0a257d6d492d1eaba185a5875728379b5064ad65ecb7
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to lure users to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6538c3e874---riragarikukusorob.pdf In PDF document text
    • http://dailymaydemtien.com/userfiles/files/dafewanomurixifatarezoma.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13c2dd2a7f---gokefupofepegipopizuzumox.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/zosonu.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942993e2cee---tamamulivuvofili.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/864f23df0381d4ca76cb56ef5ad1163d/mabizomolixogenuzadado.pdfIn PDF document text
    • http://ferrogep99.hu/static/media/file/xonudaxowafudiwagokag.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/50416425966.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160960dad0195c---wizisaru.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/kukikutiponobununazatopaj.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9174330af---wogadawirinowoturuxir.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/60158144280.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/juboxizom.pdfIn PDF document text
    • https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/nemiwolunelobibejisuf.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dba316773b7---70507579712.pdfIn PDF document text
    • http://adice-area.com/pictures/files/67094477296.pdfIn PDF document text
    • http://fd-health.com/upload/ckeditor/files/55391567515.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/degotukojafovojidanar.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd2e7686b4f---82864637671.pdfIn PDF document text
    • https://uclerbaklava.com/resources/file/ronegamalowizuvax.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/63561118572.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=villette+charlotte+bront%C3%AB+pdf+fran%C3%A7ais+gratuitPDF 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_off0000dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF5 21572 bytes
SHA-256: 3a44240a720f6c6c52fe83d75ef58c15850795f1c0c5b17616e56f3a2fe555a2
font_01_sfnt_off00011384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11384 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9B 11536 bytes
SHA-256: 034a513b30f067a7f35cefdb73ec766ad56b4434d2a1d015365e48286d599114

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