Malicious PDF — malware analysis report

Static analysis result for SHA-256 187f0a018b43602c…

MALICIOUS

PDF

47.9 KB Created: 2021-07-31 02:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 283a2bf685fbce86aaa185b0036e837f SHA-1: a9c3b1dc514031a0191623d8c62d5117112889e6 SHA-256: 187f0a018b43602ca0ccff289e324a8a45fb09e8e906ac65f3e833e38ad8ae70
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to various disposable domains and compromised CMS upload directories. These URLs are likely intended to redirect users to phishing sites or download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/uplcv?utm_term=which+is+the+best+free+youtube+to+mp3+converter PDF link annotation
    • http://americusfelderfamily.com/clients/0/0c/0c5e5e27a4da9db51eb23c24aa0fa274/File/jijijado.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077650461aa4---tolibafasawifiremike.pdfIn PDF document text
    • http://thehigh86.com/clients/13680/File/54049399560.pdfIn PDF document text
    • http://thebankcardservices.com/uploads/files/53265904336.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/70590339691faeb707628504530f6710/beremibulateruvu.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070b874e1631---94064204006.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0dfcb3eea---xadogatuxi.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098e17431b64---sivimarizesas.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/36398894228.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15b96e9854---saxiwililitovido.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e254390d9f---vejepezinusabegupizib.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d7e717817---79589367346.pdfIn PDF document text
    • http://xiaohecollege.com/d/files/nesovafogeginominoze.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/a1a3b183d9c5bd4e0e3fc69adda5fbb9/63572161426.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/78e1kc7qlolvq5cvgg2v57grn5/dutotekumipeguzenadi.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be31d3b2f87---89439712476.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/403b415717e9540ef129e560bbf16ee6/kofitaririvamuzojop.pdfIn PDF document text
    • http://englishkan.net/UserFiles/File/87699583019.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160adbaffedb66---wepatunobozuropowanozuru.pdfIn PDF document text
    • http://fairway.cc/images/blog//file/68857247424.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/wodukerefodasode.pdfIn PDF document text

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