Malicious PDF — malware analysis report

Static analysis result for SHA-256 6023a29aa7a85b74…

MALICIOUS

PDF

84.5 KB Created: 2021-07-02 14:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7f58ade02ba655c114612ff52acc426f SHA-1: 0a03538031f1b67d33e3f1587962508cbbebdf05 SHA-256: 6023a29aa7a85b747a368adedec8402bdfc2ed1b1041e8825b8a754738e1d7cc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a phishing lure or a distribution point for further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/86qbh5aqlvk58cjnha2cch4k13/vulaxufadubokajo.pdf In PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/d1450c7184c16169c41bf0c8f7210330/91231318545.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/a30isi03fh6m2utdrer4u42nme/97155504839.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/sezud.pdfIn PDF document text
    • http://jhferry.com/data/fckeditor/file///tinebafi.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/36745868664.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/vvjb014bmg17vjsd5kneqehbl4/40110789222.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609251d961829---lupovisederakokegi.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606e48d39cffc---45567907837.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/18910400090.pdfIn PDF document text
    • http://topcudental.com/img/userfiles/files/zugoburiberojubujefofabi.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/4051654c6ba5d3931dcc64ab4831683f/64471967120.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160988623c3406---25373408444.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/m54606l7h1mmdnt61dplk5kpt1/putixaredibelatovolaz.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/407715f9562461bede9bb30baee77ce3/mojuzaxupejipifolozasuves.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/220cc94a8bfe96d4ad7e9f511c3727bf/vogobuledefejerotif.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/kiwikiredikas.pdfIn PDF document text
    • https://kuepancong.com/contents//files/35025001170.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/bql2q32t4iehqvp79n754ts15m/xovixub.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/73241365431.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/panilelesalaxotuzediva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=what+is+a+manual+shift+carPDF link annotation
    • 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_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000101c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 16932 bytes
SHA-256: 78f8769384af43bc241aadeb22d24d8b66860c9140feeb160b6f504c77d6799b
font_02_sfnt_off00012db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB4 10440 bytes
SHA-256: ea2516cf2d7e60f9c2edb1b5e78b5749a424ccfb00ba482f579a410bc44de56e

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