Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd231fdeb03000d…

MALICIOUS

PDF

96.5 KB Created: 2021-07-06 05:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f7dbd88e3a34e00675dbf5896a9b0c15 SHA-1: 63976261ddc1b57d4cda78cdd9f9f5aac048fab6 SHA-256: 0dd231fdeb03000df8cabfa6ab8f548b6c388a0bfb8dd09e596b69b59d6387ee
156 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to lure users to external content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://aliglobshop.com/userfiles/file/72927562979.pdf In PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/3a7ae823d724b6b082834f55da5c2de9/48978741064.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160a69887013d8---xikupilomeriz.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/kg8gtpl473ktm1v64nce859lo7/gimevoliwalagu.pdfIn PDF document text
    • http://sanphamhanquocymy.com/uploads/files/66095482546.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/a9dac9095cefe1ff214fe1d0efc31767/15817227397.pdfIn PDF document text
    • http://fitviewer.de/files/file/bowasifimevasuxum.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///11006363190.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a74424764d4---salaxuwokikuvowunul.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/a4bc9f1077cbdbac4324a750942aeb87/40190470269.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/90a4078b0c05c28c13bf724f66b4b090/67379226526.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840724d90c0---dapatatunozuxazizaxom.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c71bef1bc05---32800566190.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5546be459---xunipidojotemutulot.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/seh72j3d12qqgq7mkt8oguvovb/78594716067.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/64365719542.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9f0d0630a---bepobolok.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607712c4bcc16---pujebezejejanapeb.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/d44d3f084ca77802b9ad37c8ec89fadf/vepijafizaruj.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/ditubokeroxedarujixob.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/f2ee5db133bcb6389b656537c02d40d5/49474198871.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/hnih3ibco8c0l01dulgkj9rt55/vetojevawo.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/0f338a178954fa230d8b0bf99e045003/75428591989.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/pugegefadatiruji.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87ceda2ec6---najalumi.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0b6873cc8---62390039979.pdfIn PDF document text
    • https://victorybear-info.com/userfiles/files/61391990444.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=basic+conditions+of+employment+act+2019+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_off0001125e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1125E 11308 bytes
SHA-256: 8e535b4abac96b9471e7c917211b72a837bfaf971c5a5cc7f6557c3d82fec14e
font_01_sfnt_off00012d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D10 17300 bytes
SHA-256: af0563a8361ebccb7e57379b0c9a03b72d2728d0dee5d9ef3182813f5f19fe49
font_02_sfnt_off00015a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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