Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0e2c303f1fd3b6…

MALICIOUS

PDF

85.0 KB Created: 2021-09-10 04:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3e92fb90a755c6e6eac94df9805ccd67 SHA-1: 98de664c41e37d5e6b2bc59c679c15f56832e352 SHA-256: 0d0e2c303f1fd3b6cd2a886f8747f607f0e0f338aa4e08b85b58ae4d960e2f4f
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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=bhagavad+gita+pdf+free+download+in+english PDF link annotation
    • http://longarmquiltingacadamy.com/fckeditor/userfiles/file/tuduvixakepapefa.pdfIn PDF document text
    • http://www.rannatennis.ee/data/upfiles/files/getunikalal.pdfIn PDF document text
    • https://ctapigroup3.com/contents/files/bigelusoloja.pdfIn PDF document text
    • https://espritgt.com/userfiles/file/finuko.pdfIn PDF document text
    • http://ilsogno-bomboniere.com/userfiles/files/49342794896.pdfIn PDF document text
    • http://lezeckastenakosice.sk/upload/files/96841830418.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/10321597663.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/20558802838.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133725286b65---81414007416.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/27310000354.pdfIn PDF document text
    • http://mobilahomedesign.com/userfiles/files/63317772901.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16131688624573---24786310238.pdfIn PDF document text
    • https://philly.drinkpoint.com/uploads/files/dixurewurilevalopusupaza.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/7032273857.pdfIn PDF document text
    • http://herve-coiffure.ci/files/90136064243.pdfIn PDF document text
    • http://euro-ex.net/images/blog/file/67989171600.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/76126365862.pdfIn PDF document text
    • https://nabil-doukali.com/userfiles/file/bujuboxudap.pdfIn PDF document text
    • http://skybuildinfraprojects.com/uploads/zofowulabapoburusawixuni.pdfIn PDF document text
    • http://rm-centr.ru/uploads/file/tejega.pdfIn PDF document text
    • https://billard-hauri.ch/userfiles/file/tujuxofatutamikumafimexe.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/pakewotugavadakibafaxanev.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/f38au8m06pr1glmkpj0sug2km7/rudire.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613589575ef28---77119672695.pdfIn PDF document text
    • https://psychotherapie-coeppicus.ch/userfiles/files/pugukusi.pdfIn PDF document text
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/1381369904.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_off0000e007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 10980 bytes
SHA-256: 4a9cf4691b8d0b4da4149a7116331377fc72cf7de97f26eec3237344ff7de69a
font_01_sfnt_off0000f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001116e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116E 19924 bytes
SHA-256: efdd202f9e52fb5b452ea6beb450b6e38e8a20fa30b014268b642449c5c6f01f