Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3f9b3ee9cecf41…

MALICIOUS

PDF

119.9 KB Created: 2021-06-28 21:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 36100d69bc17254a5415598b77050ebb SHA-1: 3f632b2d24871cb779f37c07d54e4a616319630d SHA-256: db3f9b3ee9cecf414cd4531e5c6b8758c4d217d7bacaebaa5e79591b59f09c96
124 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV, specifically as 'Pdf.Phishing.Trojan'. Static analysis revealed it functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories. These links are likely designed to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4606

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://100gastro.cz/soubory/files/94126391830.pdf In PDF document text
    • http://northcity.rs/slike/files/10953123671.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/57f2870807c4823d07dcbd34cf5404a2/watuzob.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751bf9b2963---29136279704.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609098562b4ac---67401020289.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/aebhniokfm0v1gf8ld1rb0pvo5/88296503923.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160a05db3b4e2e---zujibimutonoxinavujobene.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/50447432540.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca922b4388---tiwosisev.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/8689edcca340403ac4f6c18dd07bf986/xizuxujiso.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/8f72a65a7b94ee7616c535f0112f26bb/45037394803.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/es53tqha3cgenfn262can0ls65/gijewabarixojififobumu.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/sijogote.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/alao7cbk2hc74pbjd8j8aiqqb0/xikafufivulupi.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/ngef5dupk5is9a4p4k58ov2sl5/wapobizifusedarajojum.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/h14seomf1ib18kr50uag099bc7/relul.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/f7065632408f4f7a027db251e58f552a/jumirokubuzigibutal.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/d1e32adaed5e7cb1569e681dc55aa66f/dewosuxoporenix.pdfIn PDF document text
    • https://solener.info/ckfinder/userfiles/files/54671042441.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071846a96a8b---9487693110.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbd288f648---rupowur.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac43061f79c---88925993365.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=the+boathouse+north+parkPDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/a254d49f43d8e9695b56cd23ad46c0c1/jetavatofusu.pdfIn PDF document text

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