Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14c4b59be009bb7…

MALICIOUS

PDF

74.5 KB Created: 2021-09-04 18:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d8e1c35cff54d1fba2db349275cfaa17 SHA-1: b02a45f49639ebb7e476914cd04a7c7a342b75d7 SHA-256: e14c4b59be009bb7385a75ade68f0ae44e82f8197bf1370dc94b003e110abed8
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malicious content delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d69a9786cb4---gajasujemasetilonuroxata.pdf In PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86822344d5---jexun.pdfIn PDF document text
    • http://vantaibactrungnam.vn/upload/files/fikububomofudokowaw.pdfIn PDF document text
    • http://metabolit.ru/files/file/pebudevebabu.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f450f48e55---zilanujafezibajumise.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16081e1e1b422a---71561338622.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fad86336d15---kisewefasefew.pdfPDF link annotation
    • https://autosaloncenter.com/uploads/files/72419238376.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/d86796bdb585ee013de0da7d09805859/73878733034.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/30657688648.pdfIn PDF document text
    • http://cameradungphat.com/uploads/files/36092830378.pdfIn PDF document text
    • http://goreskyreunion.com/clients/b/ba/ba087d28c24afe6c5bc45fa062332e47/File/33546464454.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/61577686103.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613229985ecb1---mefepusujibukadasujorilek.pdfIn PDF document text
    • https://cecprint.com/images/file/larenorudumaxevog.pdfIn PDF document text
    • http://barksdalereunions.com/clients/869108/File/54351704184.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/77086665370.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b31f0e3ea1a---narozewotutaluwokuvafa.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607e942ccd34e---18867629098.pdfIn PDF document text
    • https://tavio.ru/files/file/21536864004.pdfIn PDF document text
    • http://calzaturificiocatia.it/userfiles/files/xutibanesagitoxuwerafoja.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/fudewokeg.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ag2cn2jgdbi9lo1fbr3cs01nv2/vazisasurojelokera.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/rukejuvavavufox.pdfIn PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/vosewudupal.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=unprotect+secure+pdf+onlinePDF 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_off0000c016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC016 16900 bytes
SHA-256: 754a5d5db6af467c639b4488b59fe2f536353cb05078446e3624f3adf6e2153c
font_01_sfnt_off0000ebb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB7 10560 bytes
SHA-256: bf38a9208b1063af9f083fe0cb7ddeb4fb5aeec3726c71aa57afdf42921bfaec
font_02_sfnt_off000103e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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