Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c2de296d1400f6…

MALICIOUS

PDF

84.6 KB Created: 2021-09-02 02:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 008dcd9db476d90818d3b6f2090601bc SHA-1: 319fb03c9f15690e957dcd7c7e81aaf21d94a676 SHA-256: 46c2de296d1400f6e4d0655691beb771d88fb73cb2b5e0d4a00926112d08dede
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing a link farm, with multiple URLs pointing to compromised WordPress upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7b697cfe4---84638654033.pdf In PDF document text
    • https://www.puskinas.lt/ckfinder/userfiles/files/doxobodudaravamalak.pdfIn PDF document text
    • https://tgvl.in/uploads/fck/files/muxizuguvidad.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82949cd8a2---89283069508.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/motitodojes.pdfIn PDF document text
    • http://mousike.it/img_ins/files/jarosuli.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1b255a2c6---26025824363.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/f14990ece413c8224543cfa0d69f8a97/80893386500.pdfIn PDF document text
    • http://poketomecam.com/uploads/files/71943665450.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/5d37784435d784b1c79bea01dd7b8d2b/45046098470.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161163fb527515---dojad.pdfIn PDF document text
    • http://chelseafoodmart.com/uploads/files/wukomaforavukavinikezimol.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/mujewubimed.pdfIn PDF document text
    • http://atmaircenter.com/lb/userfiles/files/furezejoxuti.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160df983388212---petizalewaneletapaj.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5f6c287b6---busawagalaketilibuxigod.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607129ffd977e---49645997593.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/39f0d03d30cc2266d8f3f83be3809c45/xinune.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb514259b06---38787763247.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/17718762400.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607beb48390a9---tejuvuduxavogasulivofige.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/96660652905.pdfIn PDF document text
    • http://qualityfirstservices.pro/testingsites/advantage_aviation/assets/media/file/40968759891.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c09b18795c4---mikujiwubujavesi.pdfIn PDF document text
    • https://qualitymattressfactory.com/admin/userfiles/file/90651149823.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609adf77f0067---pinug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+leave+a+server+on+discord+on+pcPDF 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_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 17952 bytes
SHA-256: 600034ef6f12ae885cb135d2d8826872d32055c0e00fa6c6972bcdf3c77ca5e3
font_01_sfnt_off0001124d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124D 10648 bytes
SHA-256: f8289689f6d8a270e8681aefd16c2145fbbfaf2a49abf0d961dd0b3ced6c8241
font_02_sfnt_off00012ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1