Malicious PDF — malware analysis report

Static analysis result for SHA-256 47649a5dacfae499…

MALICIOUS

PDF

91.4 KB Created: 2021-07-14 01:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f9beacfe7e0cfc140cdd033ac5b01101 SHA-1: 859102a450d8556b7617fa0f4949e0eca69d314a SHA-256: 47649a5dacfae4995ef8d5c9f32020c6b7482e22755d2ecea44c0158354e1240
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as a link farm pointing to compromised WordPress sites, and ClamAV detected it as a phishing trojan. The embedded URLs suggest an attempt to lure users to malicious content, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7455

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://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d48ed6e2f3---32389367545.pdf In PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/1c329e250e08bcf5243306db51c4315e/79539695713.pdfIn PDF document text
    • https://nhanloc.net/userfiles/file/bekitodugokinoket.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/jamik.pdfIn PDF document text
    • https://airbays.com/userfiles/file/lexazokesusonijowefek.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e9b1df210---xitamarepikiwosipalonutut.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021071304532373499.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609f169a0e98e---vokasezasowonovaniverin.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/c981b39cab99828e1902ca15662c8924/32575981972.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/be9ed84ff804615bf6176f64390c7a4c/rigemekivaz.pdfIn PDF document text
    • http://happyhanool.com/ckupload/files/xisuwenada.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/3bf1cba4875a30af92ffd0c8c4c6e5c9/jakus.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8e18fde45e---rimivesasabomesuzuvezed.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/17728383545.pdfIn PDF document text
    • http://vds-construct.pl/userfiles/file/supeponolisasepeb.pdfIn PDF document text
    • https://zhansq.cn/upload/file/vimodanaxivixi.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/bd5b87be2e0dd6b06c18f7cee20bd81c/87489209425.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a81445d5c1b---82755693438.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079a7d6c13fd---73546223235.pdfIn PDF document text
    • https://www.potravinyav21.cz/ckfinder/userfiles/files/85438962334.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/73304f79ff56b32af54c1b349fc7ab5e/66242151980.pdfIn PDF document text
    • http://aapltd.net/userfiles/file/tokulava.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=today%27s+intraday+picksPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B10 18852 bytes
SHA-256: a15f5a9c535ce243088e5c7898c3e57716bbf51877f0bf1bae56a956a1563add

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