Malicious PDF — malware analysis report

Static analysis result for SHA-256 4047b6fb4422b833…

MALICIOUS

PDF

52.6 KB Created: 2021-09-16 03:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 23a3b6a78fd1a31ccdda6caa24f651d1 SHA-1: fc513a8829f425440a8e5472dd5eea0bcab2c585 SHA-256: 4047b6fb4422b833d1fc52ad8a90b3733e814cb7c2169358f6ef541854bac3e9
124 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple compromised CMS upload locations, a common tactic for phishing or distributing malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The presence of numerous external URIs and the use of compromised WordPress uploads indicate a deliberate attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4952

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://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1613db9cf96acf---76026633738.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f4c98c4cd---73525791653.pdf
    • http://delta-serwis.pl/pliki/dofutobanazatodozim.pdf
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613005a0eaff3---78010491402.pdf
    • http://smepil.com/ckeditor/userfiles/files/pamopajilul.pdf
    • http://ozhelalikram.de/resimler/files/81713657209.pdf
    • http://omni-links-europe.com/images/blog/file/dawodibu.pdf
    • http://kanchanaspa.com/ckfinder/userfiles/files/30580143029.pdf
    • http://lulanjina.net/upload/files/xapumugubaliwobuni.pdf
    • https://xyoaa.org/sites/default/files/files/fivukimotutafop.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612f148013a96---sofaxuwuvetes.pdf
    • https://basealimentare.it/webroot/files/fck_uploads/File/wutagijixapa.pdf
    • http://thuonghieutoancau.vn/uploads/files/zujoxifus.pdf
    • https://alzubidi.com/userfiles/files/lupaxaxuzi.pdf
    • http://vaynhe.com/upload/files/gumilulapelazixor.pdf
    • http://studiolaviano.it/userfiles/files/47343911116.pdf
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/73270615613.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141114387075---paropiwibamizoperiwod.pdf
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/3b9a10ac28a1f3ee38358446796f9bb0/kelojiwoporujud.pdf
    • http://cowmoo.org/ckfinder/userfiles/files/pikegumajerodap.pdf
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/8bt8618pic32evdrukpkj9rqg9/89979754798.pdf
    • https://kovrdom.ru/sites/all/sites/default/files/file/basarupasosewunufekopuxew.pdf
    • https://arerp.kr/data/file///lagomevufanuwaxiw.pdf
    • http://vervesimuhub.com/userfiles/file/tinufaduvefuji.pdf
    • http://residenceraffaellotorino.com/userfiles/files/72333557467.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=a+court+of+thorns+and+roses+book+3+pdf

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