Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4ec26104225bf7…

MALICIOUS

PDF

97.4 KB Created: 2021-07-31 18:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0c6046d7e08c4b1930377b104152657c SHA-1: fc3eae43b6e5df40a2734cf571f3947c35ee1aa4 SHA-256: ff4ec26104225bf7a325adb8ff65b349086214c4046c8bd3d8c1a7a9d74e2375
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct user-facing content but reinforcing the suspicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://anadarkogomezfamily.com/clients/7/76/76920377ef4e0cfe2c6e77079a05cbd4/File/94095678337.pdf In PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7332c07cd---11268242844.pdfIn PDF document text
    • http://sushi-belovo.ru/files/gakisekelowavan.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/f16f5bbe684e0b56cc59afc9c3d729f5/winevukekamegagelam.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/sesilogebaz.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/og2vs9t6cncgmnmvq22tv9gg4a/5079968607.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/efe2e7f0421a041489f14d9139439229/marajogawevej.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160fb40c7c69bc---79655422931.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f432854491---vogoverujirez.pdfIn PDF document text
    • http://merlegdoktor.hu/tmp/lufujatumetap.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/fc149508754b8960b248cd5bc1757d2b/96432573952.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/daf5c1c9c3785c1fde2f424102cade9f/fevofow.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/wusabibumoxenatebirot.pdfIn PDF document text
    • http://nguoigiupviec99.com/webroot/img/files/30867177530.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ba37c3e1f---dodalodozosuj.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/8aa180923a4f61af4502e902484ed915/sexasepoviked.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/cbdea3cafd930688f6a8409b1cec2238/mujawabobisofikotagaw.pdfIn PDF document text
    • http://willbramephotography.com/regetilifulafolisugonaden.pdfIn PDF document text
    • http://dancedynamicsla.com/clients/38740/File/zelawiterawajije.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/10952173420.pdfIn PDF document text
    • https://dm288.com/slicice/file/viwizosuzesuf.pdfIn PDF document text
    • http://fredericjean.net/oplusco/file/73063886309.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/88956630213.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4c66c64bd---dilanoloba.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/5io0v5u2v3vng2o10rone21jv5/volorolupuzev.pdfIn PDF document text
    • http://sochi-vitrazhi.ru/ckfinder/userfiles/files/87173315182.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=what+does+palo+santo+smell+likePDF 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_off000118de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DE 17792 bytes
SHA-256: f0e66fa93c0eb5e0394f2700896fd4f71926c1a055b518f11e3e7ca8975d132f
font_01_sfnt_off00014729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14729 10644 bytes
SHA-256: 72cb193c1031243388a51cf0cf248b3bba8308e44d29d3cf762e6a30c704aefe
font_02_sfnt_off00015f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F50 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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