Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2da35d8fbe4c1b9…

MALICIOUS

PDF

124.8 KB Created: 2021-08-24 03:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e5e78bdf358903725d54b519cc4cdc45 SHA-1: 58460b8e82952b19cc64c04a5eadbcbed25122e6 SHA-256: d2da35d8fbe4c1b99cff82d6cd0c1e07495de4b3a78772abc52cd3881af7591c
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. The heuristics indicate the PDF contains a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The embedded URLs and the nature of the link farm indicate a likely attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4518

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://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1610c8dbb57d11---15660582563.pdf In PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/wulegijidatebutu.pdfIn PDF document text
    • http://amtutoring.com/clients/865321/File/lokonasutivoloxebulir.pdfIn PDF document text
    • https://imagebrandstudio.com/userfiles/file/12646593211.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/46743833893.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/zoxinezuzinabejujo.pdfIn PDF document text
    • http://zoop-tech.com/ckfinder/userfiles/files/19090125906.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b90ac18f0---32083938410.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/ueik73slmt2fkdqn0raovqso8j/49165919389.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/5bd526339b486cb5ea7afd583676cc7d/koduxesikufejirabokimove.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/f83a173db0a5847901a6ceb315ba2a4e/58645642802.pdfIn PDF document text
    • http://avsa.org/sites/default/files/images/files/dawixokositotirozogawot.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/86203193387.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16075655a2588e---fotoxaborij.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704c79b0d89---46305165810.pdfIn PDF document text
    • http://www.pes.edu.mn/ckfinder/userfiles/files/27634301983.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/68505999852.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5e9a78f02---86857718591.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/senijuluje.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/9382c33e4de9b4d2acdf7d6e517c1483/83598865091.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/99416732285.pdfIn PDF document text
    • http://yalciniskele.com/imgup/file/60821500378.pdfIn PDF document text
    • http://dh-life.com/ckfinder/userfiles/files/56193123474.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/pamawetegorutadot.pdfIn PDF document text
    • http://laihoawedding.com/app/webroot/upload/files/89215236044.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160c03ae33efc9---53921102042.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=oedipus+the+king+of+thebesPDF link annotation

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