Malicious PDF — malware analysis report

Static analysis result for SHA-256 097c9c5236ada2fe…

MALICIOUS

PDF

82.6 KB Created: 2021-07-13 17:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 807999e97a1ab6d8f6b152e0d0ec4389 SHA-1: 0f9506562fe6c0c711823beccb210159a7354e4c SHA-256: 097c9c5236ada2fefc7fd954c2cd4bad74a77cbc4afa7f6abf513c65ac08d228
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised websites and potentially disposable hosting, which is a common tactic for phishing or malware distribution. The presence of numerous embedded URLs, many hosted on compromised CMS platforms, strongly suggests an attempt to exploit user trust and deliver malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/ff65fd7abda035aac0be82de97872e28/giwumojewenavitewi.pdf In PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210510154313_1605102946.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16075aef248650---69063097284.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/42d0e285c24fc8a41d87a15c0447a5a3/diguwadozogapi.pdfIn PDF document text
    • http://cosmik-kino.ru/sadm_files/49484590022.pdfIn PDF document text
    • http://monkeytailranchdonation.org/clients/e/e8/e82116dd0b5861b0917add2a69208af2/File/nivigotijiwaju.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///76088947587.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160896bcddd2b5---2114810374.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/91344588496.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/59978385945.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202162424960798.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b0f7dab993f---83833620523.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/vj44ueaafd92o7m0n4p0jqtre0/6990795997.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/31823ae4c736161ac52d1e30cd65c6b2/duzazebifedasebepoze.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/wegijukazuviva.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/ummm58aj57l5bl7519r1j7mgg2/36142248615.pdfIn PDF document text
    • http://studioboscono.it/userfiles/files/12384882240.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1624146682.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/pepazagavilobur.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/004k4gqb4nukou5kcpkat7u1u3/nugusi.pdfIn PDF document text
    • http://thegioimaychaybo.com/app/webroot/uploads/files/worenimuxupudatupob.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/41384530411.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098415157e1c---63484391934.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce529badea---gofanajaxometokovaruto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=writing+memos+and+lettersPDF 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_off0000e21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21F 10584 bytes
SHA-256: f4fcbac256c5b1a3c9a98bb5de51ba5818ada9337bd96754847452456bdd6a51
font_01_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 16620 bytes
SHA-256: c5e0f74ee9361e30c2b6b14859ff07ce0a8484d055625574e9e5d67e41622b5f
font_02_sfnt_off00012535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12535 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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