Malicious PDF — malware analysis report

Static analysis result for SHA-256 20d1995206d68dd1…

MALICIOUS

PDF

48.0 KB Created: 2021-07-09 07:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b2c9a3c809f5db4caea52a22a0e74951 SHA-1: 87ffd12e9a54fc56317be2982fb57fad3721b305 SHA-256: 20d1995206d68dd1a310105c5e5d48945860d9a15b360bec69e9c9ab6af902ef
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URIs that point to compromised WordPress sites and other domains. The presence of these links suggests an attempt to lure users to malicious websites for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9298

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=dqxi+now+you+see+me PDF link annotation
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e301247bec7b597fca85a6e112bc82e6/ridulaku.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609031ffe1472---88025793768.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee5487dbce---93231697065.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/85400615652.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160965a6e44338---84241124057.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16075a7954e7c3---54035573812.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7a9130104---79059799599.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/bavebej.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccfec27aa50---tuzumazarim.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/2217e48fa539012ca3535babdcb1196b/562565740.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb4b4a517f---65746871016.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec286b0df5---femoze.pdfIn PDF document text
    • http://hyundai-dongdo.vn/images/files/39501004351.pdfIn PDF document text
    • http://1960ihs.com/clients/e/e0/e0b58928a48036c9af8d6cfc9cffdd99/File/58152262485.pdfIn PDF document text
    • http://forspeed.cz/ckfinder/userfiles/files/rozojenofubejobodobivid.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160930088cd96f---jakojelasebunus.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/nosebebegawapuliza.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/fumegimizawujakokubow.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/b86200fe82046807cd5cd1bd8bcce976/39916033590.pdfIn PDF document text
    • https://gamma-electronics-eg.com/userfiles/files/funabazixupeminezepub.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/28223d87a7434f59840a40c4fc5ae1bf/lisipatawuvevizevasam.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/883c660e75d120ca2cd1143c173db723/rosiwupobazudopife.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/f3c0a592c995af20e4530915dc37c182/89095141181.pdfIn PDF document text

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