Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ceb0514e394dd87…

MALICIOUS

PDF

86.9 KB Created: 2021-06-26 15:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb7e4094b44a802adb9fac1cde011410 SHA-1: ab31aa3bf798835c9713d75725f44a4e1e7e097d SHA-256: 0ceb0514e394dd87ed62dc6aad4842659a66632a1c141dac997cc27c26c37675
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads, aligning with a phishing or malware distribution attack pattern.

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 https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/7930f3d164c5fec20c057ef5a56f498c/gekuxofa.pdf
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bc77a2847d5---lajawupekatagaduzofolima.pdf
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/5de20b9cd56e55aeeed4f3f3315244bc/lininewijerowapi.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0eaadd4c2---kivavimiguzatamutet.pdf
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609479197f361---togejubow.pdf
    • http://ascensionchina.com/userfiles/file/11193240044.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b8e7c82ce---58052690048.pdf
    • https://arvikabc.com/images/uploadedimages/file/rokefawutenojukifawez.pdf
    • https://armagedonspedycja.pl/files/file/86287492057.pdf
    • http://auxerretv.com/content/public/file/pufuporazirazi.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/d8a6e798b07e5c4afc0a016dcba25484/tujosikopumedopo.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160796eb41c3f0---resuzi.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd564fcf769---dogewatusagewilid.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/114f7e3341b0f54a834de775c859c785/24479501282.pdf
    • http://falerisztika.hu/tmp/jesinupezububadatesep.pdf
    • http://alpanelektrik.com/depo/sayfaresim/file/59690174319.pdf
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/6tl188m6age5r4utkpqpj59760/kokiseniz.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/77ureddugac7a43d4e5tvb3gi1/47930326144.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0e6ca61d0---96871548088.pdf
    • http://x-site.by/upload/editor/files/2098342906.pdf
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/0puc83b1s30oifh3takumjkpb0/48400311949.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acff166de48---norojezuloj.pdf
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160837edfc3062---84696904431.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=how+many+yards+in+a+pool+lap
    • 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_off0000f157.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF157 16792 bytes
font_01_sfnt_off0001096e.bin
2aca0e82080ee2068675d61c364778d66a83af4a0b4565c64c9909e299243b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1096E 10512 bytes
font_02_sfnt_off00012142.bin
17554ee729b123ec9731c1316d535e55874e076621a5675a5a6b51ecf6e4710b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12142 16888 bytes

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