Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0d05c9e09b3eaa…

MALICIOUS

PDF

78.4 KB Created: 2021-08-13 19:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ac13f97bfd80c27285584f4eb2b365f7 SHA-1: c088d311e0159a726a35fc82059a2134ec3d870d SHA-256: 9c0d05c9e09b3eaa13f746da62797d17cd92cc5cb803dcab50732dbedd940be8
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or phishing pages. The document body is unreadable, but the presence of numerous external links and the overall detection profile indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/nkln8ej49odq3cjssg2vb9lq3s/nupedixoviv.pdf In PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/17a368d7d1e9b306d04275af7b1993d8/kaxumetujoso.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/6081327098.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1606c99f6da5a6---padatinovixosotonexo.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16089057fb78ce---63025632295.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/f9abt4fc5eapfvjf8s3fiit8f6/70129562424.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16073b06c1e574---13791833100.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075eaf2d542e---gavapujozenaxol.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5e5f574f5---39096987956.pdfIn PDF document text
    • http://stuarteisbrucklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jinax.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ce8126ead---81481078901.pdfIn PDF document text
    • http://www.nachtruhe.info/up/files/gutawetozo.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/498787549ddfa066f63e6173aa9f4d4f/vetin.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/zotopekamagenitu.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/75274320646.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/hqa2lq53cpsqjd54ff9fg18ps4/sokojibisadot.pdfIn PDF document text
    • https://luminex.pl/upload/file/ligemawuvijigar.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b9f95a10cb0a0bcd89f8692a793fb663/jonafune.pdfIn PDF document text
    • http://baggiez.net/userfiles/file/wavebisegexi.pdfIn PDF document text
    • https://cometsecurity.in/admin/userfiles/file/71343180380.pdfIn PDF document text
    • http://cga82.com/admin/File/vagobo.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/moridovawudaboki.pdfIn PDF document text
    • http://home-delighted.com/user_img/files/kirirorevejozudimorobela.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/fe3fcabc5960bd5779f2bd9e2f2e47ac/sobanunitatimugaxilines.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=apex+legends+ps4+hack+usbPDF 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_off0000cec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC5 10876 bytes
SHA-256: c652b72d0db84e811584fdfb842aef1a4c5a9968bb236bff151df5f628caa754
font_01_sfnt_off0000e77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77B 17196 bytes
SHA-256: 5a07407174fd984bde62a8321c5d536214f004e47d7241655f15ae5b4462a741
font_02_sfnt_off00011460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11460 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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