Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fd9dcd16b88c90…

MALICIOUS

PDF

76.2 KB Created: 2021-09-06 23:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 79a57460823ca872cfa3649aebbcafb2 SHA-1: b85d4799a70ae51dc6ba9a1e4731f550610b81fc SHA-256: 00fd9dcd16b88c90738f6cc80ec8b7a3eec8f964e40d23234a06a13c557b7af9
124 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised websites and disposable domains, a common tactic for phishing or distributing further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious intent. The presence of link farm heuristics further supports the conclusion that this document is designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://finadev-groupe.com/userfiles/file/ferebufosegagimiji.pdf In PDF document text
    • https://cape-electronics.com/media/file/44760625592.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab83819a5a4---tuwazudalovugoj.pdfIn PDF document text
    • http://rtm-plus.com/ckfinder/userfiles/files/soxumojibogasuzuzakagibuf.pdfIn PDF document text
    • http://coimbrasoftware.hu/images/uploads/files/23308316766.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160984a72cfbe2---44069524378.pdfIn PDF document text
    • http://apex-architect.ru/images/file/fadupikukosifof.pdfIn PDF document text
    • http://dsraxys.com/uploads/9532550088.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/pizakeb.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/71558603763.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/9bb982ca6b617bf4e626c28bdc23d77e/82736091558.pdfIn PDF document text
    • https://childconcern.in/trila/userfiles/file/25458254096.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/3771a438bdf1f3b40da3a8babbf08b47/50787039957.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/67641009293.pdfIn PDF document text
    • http://estatepie.com/files/userfiles/file/narapozizit.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1609661618dc15---76110616980.pdfIn PDF document text
    • http://nexxstep.nl/userfiles/file/japikujax.pdfIn PDF document text
    • http://euro-ex.com/images/blog//file/73122699450.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/ojg8tfrb95te9cftqvrm9v62q7/xudojetixa.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160756952d3890---jevejezifowukavetelod.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1ca1546b0---93494761603.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/xikefibibodotumulik.pdfIn PDF document text
    • http://lapawan15.com/shop/fck_file/file/85628043181.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=pediatric+acute+lymphoblastic+leukemia+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_off0000dc8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8A 16788 bytes
SHA-256: 2a5b3a2da4b5d5217dc5ae1900f03f60cb4062cdee7806997d723cef3e76eba4
font_01_sfnt_off000107a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A9 11228 bytes
SHA-256: d3501c93af8542d3ecee5df5cf437f609883cc3be59526b9747fd30299b34461

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