Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d685a1d13d2ebf…

MALICIOUS

PDF

63.7 KB Created: 2021-08-07 12:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 23c0e3845d6c593f5be56dfd49b67858 SHA-1: 0a10814ea3357bc2c4fcb881d689878e10b995e2 SHA-256: 42d685a1d13d2ebf69679745d4397fab0d0203a4ef6e77e284da4b7961c43219
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier indicate malicious intent, likely to lure users to malicious content or downloads. No scripts were extracted, but the structure strongly suggests a phishing campaign leveraging external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6239

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://pixomot.ru/uplcv?utm_term=how+to+use+a+tefal+fryer PDF link annotation
    • https://weborder.cloud/userfiles/file///jirumokiduviwugoxiji.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/gabirimi.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f9a967900b0---pomilaligotopivom.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/hogbjbdbgm7lso78eqnqjj4sd7/moteloma.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/qj288ofabmno8q710adi378hlf/rekelunujibala.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071bde800f58---xunozixisoviwalelisu.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee4d2251b14---xenigamajipuvefugobasa.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebbd0953d2---48528949340.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210508194140.pdfIn PDF document text
    • https://www.nuyew.academy/wp-content/plugins/super-forms/uploads/php/files/0cb29a300e4338c6a982925164437cd3/xumov.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3768af8e6---ratadigexevozerudunefaje.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/kofabezavumibejis.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/84738742453.pdfIn PDF document text
    • https://atvatextile.com/upload/ckfinder/files/jikipitikopoxofujewixow.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/vavorenezika.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8b6b13ce0---tipowiwubu.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/47981304492.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607233eb9b88a---towafefafalukusibarixivat.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d05119d80---82818712238.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a616bd85d---tesobamemudinolisis.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfc4e2c43ae---56542251936.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac4724bcd7---loxawiwifasa.pdfIn PDF document text
    • http://melvin.cz/data/faxesigoditajenotakozifa.pdfIn PDF document text

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