Malicious PDF — malware analysis report

Static analysis result for SHA-256 692a7fd6c73c691f…

MALICIOUS

PDF

62.3 KB Created: 2021-07-15 13:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 98cc412ea44bbaedef25102a13a7cdf1 SHA-1: 107c3c6d3507c5a317b4bd9585b8dbfc622ac2a4 SHA-256: 692a7fd6c73c691fc55d3d36c23b2cf0a42ec5c8744d37305e3c44a479a91655
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous URLs pointing to compromised WordPress sites, suggesting it's part of a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5048

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://cedarvalekansas.com/clients/875954/File/38770417557.pdf In PDF document text
    • http://pelesiuvalymas.lt/i/File/23995111810.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e23b623ad19---12134104270.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/vibikolegon.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/cjl4i7p7rjkm2lkudblaa6akh4/19660869996.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/1985556819.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9ecc8987f---kilomotolir.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e035285cbd---90448396349.pdfIn PDF document text
    • http://esthebel.de/userfiles/file/17872817551.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e6ffd4386---vuduwe.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160985e39306ac---94649823513.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083f507133a6---24411703566.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/dusubebixobobovoxevaxu.pdfIn PDF document text
    • https://barcelonamedicalcenter.com/files/galeria/files/42503257237.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2d20baccb---10783353399.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/sesekaberolowo.pdfIn PDF document text
    • https://nguyenvanhuongloc.vn/app/webroot/files/images/pages/files/91313932632.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/84610206083.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca1b88ca32---15457486206.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/h1pudt9qq57cnueu5jtpj1q7r6/xotipiwiwexare.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160802f3f68460---92447629541.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/21ddv9697vcvh8ch09qqsabcb4/diretupegesakakodagobi.pdfIn PDF document text
    • http://ashole.hu/UserFiles/File/wovojolebezuluv.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/58gh5fgh1upvsdkvikb68nepj4/28362304414.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=maxwell+equation+in+terms+of+scalar+and+vector+potentialPDF link annotation

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