Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0dd03da9add49e…

MALICIOUS

PDF

66.4 KB Created: 2021-09-04 14:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0423e4287f5d27cdafd400a67fc5cc66 SHA-1: 07aa53e07792bc15746d4d7c4e430bc4082c681f SHA-256: eb0dd03da9add49ead8bc1d2a2a94007ab0feb79f9a967f0c327071b08012ade
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and ML classifiers. It functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS uploads or disposable domains. The embedded URLs suggest an attempt to manipulate search engine results or lead users to phishing content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5541

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://brette-animation.com/userfiles/file/16619554090.pdf In PDF document text
    • https://upaspor.com/resimler/files/nisovodetire.pdfIn PDF document text
    • http://sampoernastrategic.com/uploads/image/files/tefasinafirijo.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c30888ab044---zisek.pdfIn PDF document text
    • https://jancsoalapitvany.hu/ckfinder/userfiles/files/71491952981.pdfIn PDF document text
    • http://myphammonly.com/luutru/files/dalugo.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/muwireserejoxebolum.pdfIn PDF document text
    • http://atya.eu/files/file/26666811555.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/150is5ce4d8lt67usocdv9bl0s/mawibivijobaz.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/9715f8ab124bdfd42702d3b0f509084e/bitisexowanadogubejafe.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/9ctarr607710quqpkgmsec5ni7/bixikenurubuzusawav.pdfIn PDF document text
    • http://cp-tournament.org/ckfinder/userfiles/files/zuxetogejagudonipo.pdfIn PDF document text
    • https://skyzoan.com/cake/beta/userfiles/file/19888093220.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/gq983gclngh6ouai3evc4qhg32/52288650100.pdfIn PDF document text
    • https://aquaprosmart.com/userfiles/files/dudirudube.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/83435006756.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/9dnj4mqfp7k3106kkfsjt23n82/98957036764.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/5379067276.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac577564d93---rovemanadep.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160781c604021f---xolodozo.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/39802215498.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5902490f5---49918654508.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/61293493476.pdfIn PDF document text
    • https://tfsroanoke.com/home/tfs/public_html/new/ckfinder/userfiles/files/malomojigoged.pdfIn PDF document text
    • https://bio-obst-und-gemuese.de/userfiles/file/25403657401.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=sequence+and+series+objective+questions+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_off0000bf06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF06 17700 bytes
SHA-256: 99c93fdb561a359ba2ae3fb545c1ff94cebcf7c55002f170f13e3dc1d78db91e
font_01_sfnt_off0000ecad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1