Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0a3dd55bc79cdd…

MALICIOUS

PDF

79.0 KB Created: 2021-07-04 13:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 9732ef245052dcf70882ad7bce9c1390 SHA-1: 51f7c9ddd1a256c2b5219bb5be6729c2cb0b08fc SHA-256: ba0a3dd55bc79cddfe1ffe57eca52a1538f94e202cc45878021497e7e0f54c3a
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many hosted on compromised WordPress sites, indicating a link farm designed to lure users to external content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4395

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 http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee9070307a---nasogofazatobiwanin.pdf In PDF document text
    • http://songhandiban.com/uploadfile/file/2021063003215073499.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/1878391a422e172991b21c829461046a/wepir.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/9219582696.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b691a54558---wutolododada.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210508021553.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608947b07cf56---50697551892.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/6v768r8mppufrmc4tcmgnsml7g/noguwewiwomukobaza.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085da3f3973c---wukej.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202106file/2021062909014770554.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607281be12836---zusirevidoxidumegigas.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/nikijerorigek.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb42a0969e9---xawote.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/oa0u6hbo8q84v159ph10jbm9m7/sosipu.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/ca6ac96e7414a82b47ee3ecee93a6501/biloruwasuvutenalimid.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/b0f975fd94052048f3819b3502c51c79/48110764060.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/topomisifejililom.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/87205670181.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/15071254566.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/lofopezema.pdfIn PDF document text
    • http://traiteur-ribot.fr/userfiles/file/92107923066.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/tazoze.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e66cb11e10---39494926364.pdfIn PDF document text
    • https://turbooto.vn/upload/files/mosogurilipizoziz.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/v9gpp5vt8tr8b4dorildot4ah2/raxidamixusofarol.pdfIn PDF document text
    • https://oklasik.com/ckfinder/userfiles/files/zujesok.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16098c06319300---35529335375.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=took+a+whiffPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1