Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a93e113fce934ce…

MALICIOUS

PDF

70.6 KB Created: 2021-09-11 17:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 44795c3b7cfbda5d2c1d53c9dd1ff3a6 SHA-1: 55fd36e528d22627ca11b1a54d73cc60d6991a5d SHA-256: 7a93e113fce934ce7c3c5c834fa60e15ceac6582e4cff870e8c29ba34ebeaf5d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged it as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

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://synerhu.ru/uplcv?utm_term=do+androids+dream+of+electric+sheep+chapter+18 PDF link annotation
    • https://mkontakt.pl/dat/file/niwazoforafami.pdfIn PDF document text
    • http://orvositudasbazis.eu/images/upload/file/lutijum.pdfIn PDF document text
    • http://emblem4home.com/UserFiles/Member/File/36643634393.pdfIn PDF document text
    • https://galaxytraining.examinationonline.com/files/15067605756.pdfIn PDF document text
    • http://loaamtran.com/files/usersfiles/files/labaxef.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137377e60f15---lebasupafuraxekizugenaz.pdfIn PDF document text
    • http://teraval.cz/res/file/20474730532.pdfIn PDF document text
    • http://ooexperience.be/assets/Image/files/bedutafive.pdfIn PDF document text
    • http://tugrabilgisayar.net/resimler/files/95585980087.pdfIn PDF document text
    • http://sofia-es.tokyo/yamituki-n/uploads/files/fawoliv.pdfIn PDF document text
    • https://cosmopolitanhotelbg.lastrada.bg/uploads/wysiwyg/files/72315311403.pdfIn PDF document text
    • http://wx-bm.cn/upload/ckimg/files/202109071854465694.pdfIn PDF document text
    • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/24700238269.pdfIn PDF document text
    • http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/xixibagukivojosipudune.pdfIn PDF document text
    • https://matras-matrasych96.ru/admin/ckfinder/userfiles/files/48821438669.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/31591311445.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/f39fcf66c5815b82465726a1e97ed03c/lalesojujijimuvepabojumug.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/161309572189cf---waperegofinaxemut.pdfIn PDF document text
    • https://mertlakustika.cz/images/pages/file/4989061935.pdfIn PDF document text
    • https://businesslife.com/content/file/87646865185.pdfIn PDF document text
    • http://xn--80aantfcaehjbxzf1m.xn--p1ai/userfiles/file/vomego.pdfIn PDF document text
    • https://elegune.net/files/galeria/files/79988646966.pdfIn PDF document text
    • https://biserica-izvorul-tamaduirii.ro/files/19672567817.pdfIn PDF document text
    • https://ciar.vn/uploads/image/files/zixabikagifidag.pdfIn PDF document text

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