Malicious PDF — malware analysis report

Static analysis result for SHA-256 e53b0f49148f86e5…

MALICIOUS

PDF

62.5 KB Created: 2021-07-24 00:35:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 88af83a91daeca70e182c118f5fec677 SHA-1: f45f0084b8c46389c22a04c25a1e98a4e1b0f044 SHA-256: e53b0f49148f86e5f5d21f2f482d93dea1d0404b8e9cf353eed09ddc2621253e
154 Risk Score

Malware Insights

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

The PDF contains a link farm that directs users to various websites, some hosted on compromised CMS uploads and disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs are designed to lure users into clicking, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9884

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 http://www.findvoters.com/userfiles/file/tinumuvif.pdf In PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/31d6309eea89ad2dffe9f11dcdeaa0e7/gutigulixajewetapibagape.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160bc73ee554b8---mewakalepirovuponizi.pdfIn PDF document text
    • http://boek.se/bilder_umeny/File/winagisulibod.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/14675140854.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20210605_122537.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/343551234609ce47249a5a.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/211of6l3jnhc8mm3dbrtm9u9av/35576680658.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8ace81b001bdd5885a316564b43b6a94/88407531094.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b57211c24---30317562426.pdfIn PDF document text
    • https://gute-reise.ru/i/files/files/punupexumipofam.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/mofiresugixosafu.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/m8ifro9ul0205kcti767s3i320/35473044572.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942cf683039---963805822.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/fe949db25828c99bf17262dc6b01aa93/14079524040.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a3039af12b9---45326551344.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606d518431165---zuwejajitezazate.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb66bc5bc7---53894804999.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/51925485430.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/k5r08pfmrtb0p9q7sreckvd8v8/jejezasa.pdfIn PDF document text
    • https://angkalaris.com/contents//files/45726383696.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=adx+and+macd+trading+strategy+pdfPDF link annotation

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