Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0e302d75e7b2ef…

MALICIOUS

PDF

115.5 KB Created: 2021-06-27 19:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dbe780b343932363c87d2868b8068d46 SHA-1: 2452b43394a841f2350a3799928eb848c19d044b SHA-256: ce0e302d75e7b2ef45fdd0f55af62a42027fec30b89ff371d1020b7dcbd6906e
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or exploit vulnerabilities. The presence of embedded URLs and the link farm heuristic confirm the primary attack vector is directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

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://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f891590c24---fobovelaminaporesagen.pdf
    • http://qtjdb.com/UploadFile/2021/06/26/file/20210626_031940_182.pdf
    • https://beyondpins.com/calisma2/files/uploads/70354233027.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/tj6sbmb4kphhjimoqt8s5p17ca/54888471837.pdf
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/601f1675b2649d51f97b0cc038d04d3f/topuzesagafizojiduf.pdf
    • http://precedent.by/_newsite/images_from_html_editor/file/lalar.pdf
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/ba0083a92a5efd3e216b796e2b537ce5/89390613496.pdf
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160782df4dd862---25822320161.pdf
    • https://barcelonamedicalcenter.com/files/galeria/files/pimutesogamikunusuxusojex.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/2lutnepa0m8sht5m3n3v9es19q/89324243118.pdf
    • http://sqx.cc/upImgFile/file/20210514091108.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/41c3f9d6ebf5c0294aed34e1bef372a2/lotosibalodagikewaruluv.pdf
    • http://ash-graphy.com/userfiles/file/3707670603.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/su11r7oin90q0teupojme4o63h/85347595099.pdf
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/66a9927da33c2e0d23841c52f185ab53/84597935984.pdf
    • http://a-kamen.com/userfiles/file/24187176454.pdf
    • http://vnos.vn/app/webroot/uploads/files/foferefezapuzivenuvuf.pdf
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/6ko0j7bbu0mo5r21fcddt1jf86/26284594738.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16090f4c454800---35590235028.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5854b5fd18---xatokinajoluj.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ilsd5e1tm24gkhiqg2rj4drtb2/82420483302.pdf
    • http://dancingstarsgreenwich.net/clients/1/10/10f73e4104fe6082999c9b722aa65ba2/File/wizagigemixupogiz.pdf
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6b8ade7f2---56046326575.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=fire+emblem+path+of+radiance+japanese+iso
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000147ed.bin
ff0c80adff277bd49d546571c4b19945b5275bf0aa833de98d2d714e86299a3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147ED 6700 bytes
font_01_sfnt_off00015f7f.bin
558b2266b92c84863357f97ae90324e03929e0ffbfc0e30315fe82e3cb09fa7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F7F 17820 bytes
font_02_sfnt_off00018e61.bin
376ccb47e83b16ec1d6213cc8d0b73b2f2d727590965e7cf50a4f517203c460f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18E61 11132 bytes
font_03_sfnt_off0001a7e1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7E1 16792 bytes

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