Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56e0a16a5f2b299…

MALICIOUS

PDF

46.9 KB Created: 2021-09-12 11:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 626a47a89132f5e9448f1500ef7419cc SHA-1: a15d726ba1cdbd8b184e4fb3c32e8393abf8aa27 SHA-256: a56e0a16a5f2b29977a46326df88567472194549b2feeda0a8b29e140f69646a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6520

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=temple+run+temple+run+temple+run PDF link annotation
    • http://carnow.jp/js/upload/files/mozasijiliju.pdfIn PDF document text
    • https://sdudyogtechnologies.in/ckfinder/userfiles/files/66235379768.pdfIn PDF document text
    • https://euinsuti.ro/app/webroot/files/userfiles/files/wutaweg.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/basokumof.pdfIn PDF document text
    • http://sunpix.ru/img/lib/file/vitajipun.pdfIn PDF document text
    • https://milsagliksen.org/upload/ckfinder/files/sekakif.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/lanoninobonoxomuxaw.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9143c8e80---26077767060.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/65555894657.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/c0bg6p4efnefa79sbbhr7b02sh/kuteponolagupobukekisob.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff9a4e5c48---remikoxabegekowakuweg.pdfIn PDF document text
    • https://brakos.it/file/14252064658.pdfIn PDF document text
    • http://heorungminhphat.com/luutru/files/56542440075.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/xojapogubiwabamuta.pdfIn PDF document text
    • http://onyx-innovations.com/assets/ckfinder/userfiles/files/66205065751.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/53483358187.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134758e2fd77---taworolo.pdfIn PDF document text
    • https://zlato-eu.cz/upload/files/nogemizolegosalosani.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132cc24439fe---18464198693.pdfIn PDF document text
    • http://pfmconsulting.org/survey/userfiles/files/pamadij.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/muriruxonuketodogizizu.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/toxima.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/91910204957.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/d9658665a28e5a0b2f86110b92d8ead1/58946901148.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/basekoloseparikabunog.pdfIn PDF document text

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