Malicious PDF — malware analysis report

Static analysis result for SHA-256 18131bb5e32467db…

MALICIOUS

PDF

74.8 KB Created: 2021-06-21 12:45:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a2bca9121e49d0dc8e4c3c3cae882e04 SHA-1: 7ba8574445969bd197516d85d4a96f0ec3776007 SHA-256: 18131bb5e32467dbb0b11a1553b8ded805a6e54cf9da7e2346a237ef7169f156
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm designed to redirect users to various compromised websites, likely as part of a phishing or malware distribution scheme. The presence of multiple links pointing to WordPress upload directories and the use of 'utm_term' parameters suggest an attempt to manipulate search engine results or user search queries for malicious purposes. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8356

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://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090796aaaba7---pusokagebek.pdf In PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/zulegeseredevexorizej.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/80d29e55435cf4866b986b1eee2a4b69/83414671242.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/f76f0e197fafbadd445fe0fdbdf66628/kowewoxoxubowulago.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc73d986143---jepasivana.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63ed9f2a57---19036965021.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e17c73843---doxirixolixazerivuxabite.pdfIn PDF document text
    • https://bdsvieclam.com/upload/files/39938278162.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/tawusiwapuk.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082a4cc8f970---pitumaregefitukunewobovad.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2325fe7fce---10661566800.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/266897e94f10471c8f5f2af06fc65303/32409166699.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd66bce8a0---weneval.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/6efbb46d5caa4ca955f82222e805d580/ruxadub.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-30/20210530122604101196.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606fffeb1edef---6800167695.pdfIn PDF document text
    • https://tepihtrava.rs//files/nuseminexozovufufugarefup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=falguni+pathak+song+download+mp3+freePDF link annotation

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