Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a9b34b639e7561…

MALICIOUS

PDF

76.8 KB Created: 2021-07-24 14:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 863dc93d5a32e8c91adcac4ce15c6f2d SHA-1: 38bff2e572a3d0ecab9da46a62b8ced2d6023eb9 SHA-256: 89a9b34b639e7561d76395bd99ca1590a20eb4aa8b597dcb8b237390175c645b
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or scam campaign designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves using a link farm to redirect users, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8141

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://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3f43db9b4---zuguxagexirapoxidimidid.pdf In PDF document text
    • http://bebsulmare.com/userfiles/files/zibotedi.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/fdbabe2a6062110d4f36330c4bfc9bac/94656422547.pdfIn PDF document text
    • http://wallsfamilyreunion.com/clients/876683/File/kigidapi.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c45656251---ritijato.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac87b5ee4fb---61766909853.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/0d8d4a49894f0048d9d69c273588d483/fukifetolivoxiz.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/vetadomov.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/me6j77fao50e58oa7hmki2ek06/3688715599.pdfIn PDF document text
    • http://grandbarnettfamily.com/clients/a/a0/a01b80d98e57c38af56892ab55e7d82f/File/45974437315.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/91bc055d31d2ad15086923fc468af6a2/54874164632.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed2af09f9f---33934763520.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/97175787777.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160afe90cbbe66---72328952780.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/84147098546.pdfIn PDF document text
    • http://italiancousins.net/clients/5/54/54f3d33123424807706abe9154268524/File/52885424006.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d6c44d2b1f6---garoditililajujupesugi.pdfIn PDF document text
    • http://aal.tw/uploads/htmlupload/files/7368576160.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/17580923925.pdfIn PDF document text
    • https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/19221764174.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4d0e3ecf81---59414389195.pdfIn PDF document text
    • https://webmenuplus.com/images/file/sibufulujuwu.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1930b24bdb---fabusilolugegavudotijojim.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/neluvodonuko.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/336db3459fb3e07a1f293e8806d70d00/domoma.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/krdggucb2sc0o5hnf24eqoo3d0/jazinixemijopeforagalawun.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/54851251171.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/e97e09bf735953f9fecc2f853c2c68dc/91763061573.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+reset+your+aircon+remotePDF link annotation