Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea247e957558febb…

MALICIOUS

PDF

48.8 KB Created: 2021-09-19 04:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 931bbc9ff3642c8131301b8d732e75af SHA-1: c1ced3173a2054fed19908248fd189acc9709d9d SHA-256: ea247e957558febb68be5c599e7d18b6117145b4de418da4c2fdf19e19384965
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised or disposable domains, indicating a link farm designed to lure users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. The document body is heavily obfuscated and unreadable, providing no direct content clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5740

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://crysiq.ru/uplcv?utm_term=go+on+movies+malayalam PDF link annotation
    • http://kayapalinakliyat.com/file/23205071834.pdfIn PDF document text
    • http://dermatologomiguelgallego.com/miguel/fck/file/63916443845.pdfIn PDF document text
    • http://dalieuht.com/app/webroot/uploads/files/89655787613.pdfIn PDF document text
    • http://violetstudio.in/userfiles/file/45906549149.pdfIn PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/18876956175.pdfIn PDF document text
    • http://stavclearing.ru/upload/files/ramiso.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d231f5a6ae---41561539174.pdfIn PDF document text
    • https://invest.pl/userfiles/file/48663718924.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/rng4kjj9pu5b2tiu86svm9jrme/fosuzuzarefasosekowu.pdfIn PDF document text
    • https://peltonfell.org.uk/ckfinder/userfiles/files/68039944598.pdfIn PDF document text
    • http://lecostationery.com/files/file/72964589603.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/fojawosunasa.pdfIn PDF document text
    • http://www.jokilaaksonratsastajat.fi/file/56742840983.pdfIn PDF document text
    • http://123podkrovie.sk/editor_uploads/files/81760066835.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/51943896875.pdfIn PDF document text
    • http://zamaro.cz/images/fcke_files/file/82975738720.pdfIn PDF document text
    • http://qishuochem.com/siicea/userfiles/file/40687586334.pdfIn PDF document text
    • https://millvalley.com/wysiwygfiles/file/rupigi.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/68007474404.pdfIn PDF document text
    • http://stluciachamber.org/uploadedImages/contentImg/file/17204863264.pdfIn PDF document text
    • http://frutapac.es/ckfinder/userfiles/files/3414213720.pdfIn PDF document text
    • http://sarljarry.com/userfiles/file/kokozakikomevo.pdfIn PDF document text
    • http://mbeautyconcept.com/upload/content_images/file/ranitetalev.pdfIn PDF document text
    • http://metabolizmusonline.hu/images/upload/file/61044864847.pdfIn PDF document text
    • http://lesbambousbleus.fr/ckeditor/upload/files/wivexetulu.pdfIn PDF document text
    • http://fruhmann-elektrotechnik.at/sabinemupadevivi.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6897249791a0e1164bd1926bbf4e249b/raguxipozekiwej.pdfIn PDF document text

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