Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0aa96cb26a37cef…

MALICIOUS

PDF

58.7 KB Created: 2021-07-13 00:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ea16b5941572d989492cd7d75b1be4f0 SHA-1: 3941d7b1ce23c8d498179352b2897aba18215b54 SHA-256: a0aa96cb26a37cefc5941fe57d456cca556d07639977c77462d9e57d4e7ec819
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to domains identified as potentially compromised or disposable hosting. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be directing users to these external sites, which could be for SEO spam, phishing, or hosting further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5356

Heuristics 4

  • 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://tano-cable.com/d/files/40357707163.pdf In PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160d8262a76f3e---sodulememuvexezoxo.pdfIn PDF document text
    • https://wrd13.com/force/file/ruguwudizatetininav.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/19bed78b30fab3e1a4d13b3486e6c7ef/soxusifekodizamikowaxim.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/cecf833e0b382cb2458e4cb82cae59d1/detifof.pdfIn PDF document text
    • http://alltechsro.cz/files/22049780214.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/2050399275.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/suwopipofujejo.pdfIn PDF document text
    • http://hasyo.net/files/file/36982633805.pdfIn PDF document text
    • http://brlairport.com/images/file/fututomedogu.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d240833753e---28706542379.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/kofonigomatajar.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/29285241466.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kifelijivixarojajegagi.pdfIn PDF document text
    • http://graham1978.com/clients/79565/File/bejabiliwigowefojojol.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/b383bd8ae2595723ee4d2be29e20c503/37117821165.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/69543405690.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093f41f452c8---65634730863.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/65210ad80eeee728f536b498d32c91e8/21628725927.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16090d4dd2e30b---49407289068.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/peluzonunejixinuj.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/6b92d633c30bf4bd33099eedc896717f/27064955745.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806a489b1ca---fudixapolizobifinifakuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+find+out+who+is+unsending+messages+on+instagramPDF link annotation
    • https://mediaget.com/userfiles/files/93237339818.pdfIn PDF document text

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