Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2023d63d6c067d…

MALICIOUS

PDF

81.6 KB Created: 2021-09-04 15:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6fac439acc4762bc029350986d3aebd5 SHA-1: b3a0ec5e7d88d6419198fd8f2d8424b3a78a04a0 SHA-256: 9d2023d63d6c067d407c8222332edcb83e3c8681d7833eacc6c348da718966a0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a PDF-based phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pixomot.ru/uplcv?utm_term=aditya+hridayam+stotram+odia+pdf PDF link annotation
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/7fc1df8b85104e8a9cbf517ad42c9bd1/nenimajoxikinaden.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/walakosetodebam.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607132422eede---ritiwunujolusod.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/6773c9efc7a4bf3d93d324af69dc53c4/12561813768.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a7b836a0b14905c51e7ee131aa63eeb3/63736907927.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/c01c7c6b8e42891d47eb8e2de1db7d8a/50117180408.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160aadd65abdd9---ruvalebomelili.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611deae47a491---38663404661.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130cbbd60cf2---57172655836.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/40763284b23a3ea5909e5e3b57e165a0/najod.pdfIn PDF document text
    • http://xedaptheduc.net/app/webroot/uploads/files/rimuwuwedisanixivimitatut.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cb25c5a375f---wagibilakugefutivaminutir.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/26907483986.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/71459350204.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/popipulufimepekonowek.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/sunixufovogasanewedulu.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161051c1960fbc---33986413774.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/0f45jvo2ea3u9i3u93kf8gnb1p/91154136704.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/7014055959.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/1sese9v3dihtgs01hhc3ii5vdg/tabip.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/8feqaskjsimrolrhri2ap19smm/japurilita.pdfIn PDF document text
    • https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/safiw.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/b7hmpll3v13j3m42jr7rqlsjsg/xamam.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/rasapovonederifekeven.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/ac8795cb7877b327ed8c539bd76080c0/31719245008.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F6 20464 bytes
SHA-256: acc54d98d9d7d5a4b2d24789ed1389420f40688871cc3b4c23435e2b315a43a4
font_01_sfnt_off000108c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C3 10576 bytes
SHA-256: 6fda7ae6db1dfcefe61164430d792464251af090358731b2aa2d93c853b173e7
font_02_sfnt_off000120ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1