Malicious PDF — malware analysis report

Static analysis result for SHA-256 44750971b26bd1c6…

MALICIOUS

PDF

56.0 KB Created: 2021-08-21 10:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1daf1c330155990108801d2afcc955b3 SHA-1: baeef8d188d4194846aa206b398781d43e6726fd SHA-256: 44750971b26bd1c6e8b57199118e326244339e0c97786dc3fa68603f26fb94b5
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. The presence of 'utm_term' parameters in some URLs suggests tracking or redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

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://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/c5e2e99012588e948f6a00f61d6f316f/17976563564.pdf In PDF document text
    • http://adria-ex.com/images/blog//file/tugepet.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/minuvixukebuzuve.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021061120420233.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/kevedatipijopupebirofosif.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/tudamunoxibupisuxu.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/71691837612.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836a6cc7d71---mulelowe.pdfIn PDF document text
    • http://minhvuongthuphap.com/upload/ck/files/tejigikidatavojebasinif.pdfIn PDF document text
    • https://2acontractor.it/images/file/pugadikovekefoxufugu.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/4d76vb3nj9o6l525157pgc6pt7/lidowagixolewide.pdfIn PDF document text
    • http://lindendirect.com/tempimg/file/basalukozimalixagemux.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/593cc99a64fc9e2f2e33a291676292a0/litevowetowita.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/qoe2klbltbd9b5irkjukacskgq/61834277605.pdfIn PDF document text
    • http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/92017081678.pdfIn PDF document text
    • https://zulapin.com/calisma2/files/uploads/65844711352.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5185aee226---10758407006.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/e8bef1d9916077b62b41a7e955a0f067/46070574303.pdfIn PDF document text
    • https://carlojans.com/cms/file/suvifabeviset.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb7497a6721---penidabebas.pdfIn PDF document text
    • http://saga.diamonds/uploads/ckfinder/files/wanuzovawudameseleja.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1c47cc463c3311822ff7dc77a35fed0b/dinovisatifitujibikudok.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/95840255096.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=ace+ventura+full+movie+in+hindi+dubbed+download+720p+filmywapPDF link annotation

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