Malicious PDF — malware analysis report

Static analysis result for SHA-256 487922f78382bd28…

MALICIOUS

PDF

69.3 KB Created: 2021-08-14 02:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3480018a61ab4f72117961ce2d05bf8f SHA-1: 3ebb69a41a7d46abb4d4e64d12b7fc2b956820e8 SHA-256: 487922f78382bd287c3a1b26984526bad658e6560af34a44ff1752c364ca91e4
154 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the presence of a link farm hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious or phishing content. The embedded URLs, while numerous, do not provide a clear second-stage payload, but their nature as link farms points to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5990

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.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa665d6028a---53721350579.pdf In PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8f9e2c301---jugazer.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160832e7cc0e3f---63217730212.pdfIn PDF document text
    • http://faithartists.com/clients/877397/File/kesefilodozanewabik.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/d6na7bof759u2o4t9ss8i7lpl0/kojarewewivifapubulu.pdfIn PDF document text
    • http://michelschuurmans.nl/images/uploads/file/togiw.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/15352728120.pdfIn PDF document text
    • https://lawrenceyezersky.com/userfiles/file/87814850737.pdfIn PDF document text
    • http://vagtteam.com/userfiles/Files/73994500489.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/092ae537843bc80ed78889d8c9fa8314/30999552815.pdfIn PDF document text
    • https://iaido-iaijutsu.ru/userfiles_exc/84988642687.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/33329435884.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/xuwupilapexalarazax.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/a067947bed42d06db637c4694283d844/97231240512.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160963ca0e552b---xizakajazuz.pdfIn PDF document text
    • https://atasuorganiktarim.com/upload/ckfinder/files/xuxasisenafoxim.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/92101984123.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa4d9ec531---wijifovin.pdfIn PDF document text
    • http://feldbach-tourismus.at/files/jugevunelupegeguramiguli.pdfIn PDF document text
    • https://clic-essc.ch/ck/ckfinder/userfiles/files/kagifovof.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/9fb75fde26094538c7a31b2872d1dced/92946430462.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=manual+taller+suzuki+bandit+400+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCED 17332 bytes
SHA-256: 454186bcfc1259e37cb4fa6c65b7c02517112f715ec044762ddd55ccccb7f9e5
font_01_sfnt_off0000f8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EB 10956 bytes
SHA-256: c0479dd290a5fe3c32dabd32ddc7779b8da42e699ee3e95925ff09fe599a045e

Open this report in the interactive analyzer, or submit your own file for analysis.