Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b93aff3db62e2b…

MALICIOUS

PDF

70.9 KB Created: 2021-08-07 07:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ff9a70dfc0144e9f329b94c3760d30a7 SHA-1: 72f1de82622b657d76fdd9da2807010be816bbc8 SHA-256: 86b93aff3db62e2ba04276eaa2b25b4d20906deb6d52aa7eb45a32f605a2b24b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The heuristics reveal it functions as a link farm, directing users to multiple compromised or disposable hosting sites, which is a common tactic for distributing malware or conducting phishing campaigns. The presence of external URIs and the overall structure suggest an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16099033742fb4---xexozedopegosubixovi.pdf In PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/lubibotamibelasaji.pdfIn PDF document text
    • http://cnhhgj.com/upfiles/userfiles/file/xogabifusegoralusuwotun.pdfIn PDF document text
    • http://cdwy028.com/uploadfile/file/20210626055525.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/sonegebop.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e8c8ebc57529d98248ecb380ca06d5d4/miwimijoladivunuxazi.pdfIn PDF document text
    • http://blesk-stroy.ru/userfiles/files/99727642331.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/9jrq396ugm7vb48eq467pmad8k/98833893033.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/13859647480.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/wefikitobupaburapajesif.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/53071da5b7bb819c67ec8a74b702efcd/28216338213.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16091be9762897---golorosad.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e429c3d3948---wapegikidi.pdfIn PDF document text
    • http://jandenzobv.com/image_uploads/file/gupedemojazupobatabijage.pdfIn PDF document text
    • http://sun-tes.ru/files/file/navasa.pdfIn PDF document text
    • https://digireg.se/upload/jigaselesu.pdfIn PDF document text
    • http://henrycrawfordreunion.com/clients/1/19/1929e20d1ffebcad6d8b2a659e9c170d/File/10205335658.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/17538323244.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/0s9ti2mpmkm3rjsaecrnog5hhd/wuzapumawujujo.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/1eca2bbb35638c54a530e1fb8c2b4874/75630514493.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160c35844809ee---vulanowupaxosedobipezud.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c18ef6094a4---jifodo.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/167f1120fa20aee4ee33319cfe770e80/68768388604.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/c198e896d3cdfda4bcfaa785abd46598/dodefakativuzakuwar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=samsung+galaxy+tab+s6+lite+review+indiaPDF link annotation

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