Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa463179894f2af7…

MALICIOUS

PDF

98.7 KB Created: 2021-09-02 00:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ebeaf07e53d4057c9729a14689d1a752 SHA-1: 0fa8797ee6145230aa247c940a220b78338aaeec SHA-256: fa463179894f2af7c28c1bc36fbc43535921429442b9a93653ff8d37bce191d5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to websites that appear to be compromised WordPress installations, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further payloads or provide sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f95ea737c---55444808037.pdf In PDF document text
    • https://mimpishio2.net/contents//files/pepopelofetomegak.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/b8bca5aecb137f2212f6c1911576279e/xidipuminovizixefigikutij.pdfIn PDF document text
    • http://chothuethietbi.info/img/files/93684070672.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/16183834484.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ec3faf161f9---18556960175.pdfIn PDF document text
    • https://jodhpurtravels.com/nbloom/fckuploads/file/xapugi.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/p3v7nqrkv5rvme8b8bgaotmogv/famanomuweta.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/brplmr6rm1lhjrh6sg0fc8h8k7/46916261383.pdfIn PDF document text
    • http://szakkepzosiklos.hu/upload/file/digazi.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d50e52618a---8031003036.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/81957949917.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/160919700e7606---sanomu.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160724d73950c8---180211324.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160e044d95368a---senoxitopufak.pdfIn PDF document text
    • https://ijpdua.com/contents//files/mogegepik.pdfIn PDF document text
    • https://inijariku.com/ckfinder/userfiles/files/61683957371.pdfIn PDF document text
    • http://fuga-hotel.com/CKEdit/upload/files/tifebagadomezazaxesebenoz.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/19078614655.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160935601681a2---48544130107.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/komos.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/suzubilesevidu.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/fb2ssagn0tld8jvspl75psef5l/fazifesizolugujomabij.pdfIn PDF document text
    • https://tasivn.com/upload/ck/files/23292168538.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=fair+complexion+meaning+in+punjabiPDF 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_off0001124a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124A 10900 bytes
SHA-256: 3c91e7f2937f66e4d420a8f6ed5151b106151af3adcb09150cad9c71fd8fed95
font_01_sfnt_off00012b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B38 22168 bytes
SHA-256: 9a3e4cee488c3cf55f95f666af44d89478271ee8c579f19862a535a13d9676d1
font_02_sfnt_off0001651c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1651C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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