Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06ed4562e4af0ff…

MALICIOUS

PDF

88.1 KB Created: 2021-08-25 09:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e9a9520ddb9dfdb770a1acd92b9e2494 SHA-1: 03c5bbcd5de57c8f325a12132ad742e3d2f67593 SHA-256: e06ed4562e4af0ff5654f25a45e38ef74def61b3eac61def962e3c4774b0e448
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution campaign. The presence of a 'utm_term' parameter in one URL indicates a potential tracking mechanism for user engagement with the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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 https://garglob.ru/uplcv?utm_term=list+of+spare+parts+of+cars+pdf PDF link annotation
    • https://t2sc.me/userfiles/lekepazibadawusuwininazo.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/65896818721.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ab399ee0d---javobatenarutanafigid.pdfIn PDF document text
    • http://teplospectr.ru/images/files/keminelipiwajobexaja.pdfIn PDF document text
    • http://longchimvac.net/app/webroot/uploads/files/286683387.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20210815_B65B2C8FE84665B6.pdfIn PDF document text
    • http://avvocatoandreabruschi.it/userfiles/files/2663232757.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afdf4a9cd9e---51571514114.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4424d0ba8---boxikob.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/malis.pdfIn PDF document text
    • http://almar-bus.pl/userfiles/file/28649675202.pdfIn PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/kanizofamixebad.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/42479883026.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/22556768138.pdfIn PDF document text
    • http://humanlitech.com/files/files/49053169857.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/7697653396.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085107fbfe04---mofidexa.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/d007f959612ce70400a6069845ab9122/99854265366.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/93338687729.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/251310263032.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/81569046747.pdfIn PDF document text
    • https://castilloexterior.es/ckfinder/userfiles/files/rilavutefanigojafakisini.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/8c3840e74ed4e616aaf5a90cf3e50246/jawidubufopegejamifo.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/59200782582.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbdc8a8d3f---kibokivunilepitinovolu.pdfIn PDF document text
    • https://samsungklimalar.com/upload/ckfinder/files/binetivutefil.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_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 17980 bytes
SHA-256: 8f42990865fb567dba41e5855f7165c7453c7150b02e59f037591ca92f9ee53e
font_01_sfnt_off0001211e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1211E 10420 bytes
SHA-256: 70f0a5923fee1ff1f9daa5f409e87deeef567a70aa759ce76d74e00c57c75ff3
font_02_sfnt_off000138e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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