Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d373f349623c4d…

MALICIOUS

PDF

109.4 KB Created: 2021-09-01 06:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 01529cfabd2e3f56085d11840e2ba3b3 SHA-1: b24ca41035e5809d32e13b365e48b2041b5a7452 SHA-256: 07d373f349623c4d5af5a0ea5c7141acd11e3de5ea1b8a40dbb707e1dc6987f4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm used for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. Although no scripts were explicitly extracted, the PDF structure and the nature of the URLs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1490

Heuristics 5

  • 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
  • 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://nomylo.ru/uplcv?utm_term=fifty+shades+of+grey+contract+pdf+download PDF link annotation
    • http://bachtungcompany.com/upload/files/97543951459.pdfIn PDF document text
    • http://rigassprotes.lv/uploadz/file/86754588101.pdfIn PDF document text
    • https://otartufo.com/ckfinder/tartufofiles/files/gaxuvojinejonenamoxulub.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607d389b70467---vodejowodewekofujelijiwir.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/59553100825.pdfIn PDF document text
    • http://riph.pl/userfiles/file/77825529350.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/jiridoxerijikotegadojat.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/41638043851.pdfIn PDF document text
    • https://ibeguiristain.com/userfiles/files/91038008212.pdfIn PDF document text
    • http://ligneus.hu/upload/file/63911269115.pdfIn PDF document text
    • http://jumpstart.mobi/userfiles/file/30215830759.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b7369be1c92---28076746772.pdfIn PDF document text
    • http://alotercuman.com/ckfinder/userfiles/files/83443636317.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/d7f7d43e762505164703fb676a5e9ce0/43121595785.pdfIn PDF document text
    • https://bangkoksolarpower.com/syner_upload/images/files/92735597979.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/bb8c73c13cb0c4cded719339b68d9a38/nabugokepafukexijugi.pdfIn PDF document text
    • http://area100impianti.it/userfiles/files/55443645975.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/jopilerupituwarepo.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c47461711c---ribasufofodi.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160fff91e0b9ae---jerisikinesikov.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a89f107bdc5---renatevexutebevezi.pdfIn PDF document text
    • http://newgatedesign.com/Images_upload/files/davirepuragafedukazezi.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfa698d8b5---dapovivelaxoja.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d616152524e---1796223624.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/ludoleb.pdfIn PDF document text
    • http://susutour.com/userfile/file/worigavakobeli.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000176a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176A6 19044 bytes
SHA-256: 0412debe90bae52088e44ea624bbb7b532b32919122693a56e710f3d85f5e0f2