Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d3618d7b046783…

MALICIOUS

PDF

94.6 KB Created: 2021-07-04 14:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c7d4b37a73962800dc097f7d273d769c SHA-1: 9ba3cc3aa2385d76b765fe3fdd67f14df648a321 SHA-256: 65d3618d7b04678381a85162f37f5004741d6689d2c8fb82c83804f1dca7b6f9
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves directing users to external, potentially compromised, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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 http://guides2alpes.fr/uploads/file/ridisujegekisila.pdf In PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b85dd0910e---17580572733.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a63b9888---69204422327.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b655c489d8e---jipapakajovogixebebege.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/74b9094d3140f6084905142dd7177e2e/xefijemunixupiwawap.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/tesovosimudizasolibatiza.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828dee688e3---xaxisulipujipedot.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/56324198951.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/5solbuls2leluclhv7tp1cmalj/6600656757.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/nosalise.pdfIn PDF document text
    • http://yngc.ru/admin/ckfinder/userfiles/files/64105438153.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/11e556bd0ca9bd811e116e1e329dd220/1199208783.pdfIn PDF document text
    • http://mamnonlittlesun.com/upload/files/jaxuwefabutu.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877fbf0f72c---91971249412.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071df42bfae8---sixumevupobonir.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/1601350e7b55e6f2a0f8b9fb8a1921aa/pewezopojiporisoned.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/fmefmfhhgmfk2vlaj3rod3h6eo/98277383345.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/49638729977.pdfIn PDF document text
    • http://kleiberit.ru/files/file/sanadosuwotevigaluzus.pdfIn PDF document text
    • http://www.valathors.com/ckfinder/userfiles/files/fizusuvagigalar.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/bf80a2f00132827f042df917c4ca0e48/jebub.pdfIn PDF document text
    • https://zebcom.in/userfiles/file/27928058231.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16081b5d51372d---25887089183.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11c1477008---55005114464.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=resurgent+meaning+in+englishPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000f268.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF268 27484 bytes
SHA-256: 9fd385df67a8e04c8a8852cf916e77d35753ec3914cc48c6a39682363af44660
font_00_sfnt_off0000da57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F5 18764 bytes
SHA-256: 6839ee0d60ebfc74388930179f6baf2c3ae5591a8718dc8b08dc446cb8b93e33
font_03_sfnt_off000154eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154EB 10580 bytes
SHA-256: 2ec5bd224e52bf4acba1434227519c0e88e2559cc4bcd9deb2903a36d3c09a66

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