Malicious PDF — malware analysis report

Static analysis result for SHA-256 be032a9bcd681d54…

MALICIOUS

PDF

73.1 KB Created: 2021-06-29 15:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 78139045243ad3c9508f50f995f40bc1 SHA-1: 4f5eb323ddd10a2350d851548140844a041771a4 SHA-256: be032a9bcd681d54eb981974e91c2aa7d81375f0610e2d3b47b41df619e48b02
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple distinct hosts hosting PDF files via formcraft plugin uploads suggests a coordinated effort to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa76e4631c2---75266805977.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b918fde3f8a---puliremurugorijeguj.pdf
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f788be212f---nekukokawovi.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/3bdad998f7e35647200b038e3cd18b6d/92414405254.pdf
    • http://pizzeriagiganti.ro/imagini_ws/fusojivego.pdf
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebbb88074d---vixiti.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/6eec2ddcb5794996e8b777383d5a80d5/25031326467.pdf
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/t89di7rnusi3eho41ut691nh1k/neviwaxasikivedewima.pdf
    • https://juhaszautovill.hu/userfiles/file/lusamol.pdf
    • http://md-servicios.com/userfiles/file/20548370338.pdf
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6e3149999---bamarominafetuseliden.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d18a8d2a3ba---60076060728.pdf
    • http://hpworld.hu/data/pic/Image/file/67971408789.pdf
    • http://meyanko.com/userfiles/file///25641816086.pdf
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c35842aa1---jinopiripodijifesut.pdf
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bacc1eb6c0d---wolavosagotari.pdf
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/fe949db25828c99bf17262dc6b01aa93/14079524040.pdf
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/681c169c0b30173e6ede81276b0fb210/mugikozonekaz.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed4fc52d43---91004111275.pdf
    • http://inspiredindianfoundation.org/uploads/27975836299.pdf
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf549b7b092---32914443919.pdf
    • https://lamaisonducoeur.ca/upload/editor/file/larajafurazinumoleko.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/46433f7100035cbf4e5b1cfcb21b8fae/muvipefad.pdf
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160785677dcee8---38529634539.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=the+wolf+of+wall+street+movie+subtitles
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba7b.bin
f03771f7f1ed8f8076ff23c5854ce90c99d7ac56f847baf6bb171d796f441bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA7B 16428 bytes
font_01_sfnt_off0000e463.bin
42d33853c533be989509b68b9c21c49efa6898e6acf5c3d998922e05209c665f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 10732 bytes
font_02_sfnt_off0000fd2c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2C 16792 bytes

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