Malicious PDF — malware analysis report

Static analysis result for SHA-256 49145581420634a7…

MALICIOUS

PDF

54.7 KB Created: 2021-05-12 14:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 412d806835ce291204aaeaa0d21bdd80 SHA-1: 60924c6a4ac0600aa1a5a9fec0f2487a56644459 SHA-256: 49145581420634a77968f92d8a19f7b0e0613dc0d39a367b298d724e919ee3ce
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised CMS upload storage, suggesting an attempt to lure users into downloading files. The document body is heavily obfuscated and contains metadata related to wkhtmltopdf, but does not provide clear instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7674

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://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/bsl6bnmgldbmolhc15ra8k1l7e/80298836416.pdf
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/1394b5dbb3450ca16153b7e65f1c0f79/38026275863.pdf
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/d3f85d1e733fda33cb4c64ef84827631/41458752832.pdf
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cef25b4640---94656644591.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160800c0073f10---guzul.pdf
    • https://aimara-bg.com/userfiles/file/75396544285.pdf
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/f78e49df8d5dd37a4ab8c59d1a0a4797/gozasilefesud.pdf
    • https://asset-books.com/userfiles/file/52603292874.pdf
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/368e29c523c971903a3262017a9ec4cf/xoxuvimipuso.pdf
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086c589585d8---xipodavobag.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/07112e302181b212a7bb30ee094a8443/mowaxovotuxeleres.pdf
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/70a015534946132227a8ac9f01bad2ef/75171948595.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b04e176769---xajenon.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/537p47jvnafjk4rmm833d4h2jr/56463771895.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608829ed24f44---razewo.pdf
    • http://allmedicus.com/userfiles/file/35186202661.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=opera+browser+android+apkpure

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