Malicious PDF — malware analysis report

Static analysis result for SHA-256 7203fed1d96f30ab…

MALICIOUS

PDF

70.3 KB Created: 2021-07-01 17:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f47f1259cb240ae326f796eee778afa2 SHA-1: 7bd2e2c94fe94a6fa421407f30f9b9a40c58d99d SHA-256: 7203fed1d96f30ab059619d274b4248f80ef7b8b7f8968ef64db3a7a76ef7c62
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7018

Heuristics 5

  • 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.
  • 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://nomylo.ru/uplcv?utm_term=pranks+to+do+on+your+sister PDF link annotation
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad78f30809---67168435056.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/godimutulipalewuxefib.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/xagebem.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/492c0202d4962ef4f4aefe83978371d3/bakivuvunelovuzotipa.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ciaqskuaehhgllicv7627joc35/pogapipaxutiz.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c939c13ebc3---jamagoniwadizopomufip.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/12598546412.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/9814237e7c70b50b0a9896bbdf8e8c5a/50601633994.pdfIn PDF document text
    • http://fkhd.cz/data/img/foroxaganarowutajorelu.pdfIn PDF document text
    • https://bachson.net/upload/file/77562968542.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083427a64908---49805364108.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b070345a4a6---75275911989.pdfIn PDF document text
    • http://axwelindia.com/uploads/mozati.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/84897984727.pdfIn PDF document text
    • http://www.bandungmesin.com/file/wuvipifikedivoturirorob.pdfIn PDF document text
    • http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/13129984721.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/cdb542e00f6597959c44387106c4f0bb/dowupusolijufaniteruk.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/6eafa419f1741f4e616e183008ca4ba2/zemilizigozixopexakataxi.pdfIn PDF document text
    • http://hibertek.com/image/files/20210628_133243.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/emo1gug7oqocvb5djhgnvfhec2/kefebutarit.pdfIn PDF document text
    • http://beiks.info/public/file/reniluzigiputulinuxob.pdfIn PDF document text

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