Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee449740bf1ed91…

MALICIOUS

PDF

119.7 KB Created: 2021-08-20 05:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ced4f2682823277534a57f0f01e19c7c SHA-1: 18bcaf2fc301f4360188af68b1aaba1c63ddb308 SHA-256: 5ee449740bf1ed91b21ca432ba5d08a21032036b792a5504a4e0e093dffc614f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links to compromised websites, suggesting it's part of a phishing or malware distribution scheme. The 'Password-protected archive handoff' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanners.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://irlanc.ru/uplcv?utm_term=bruno+stair+lift+troubleshooting+codes PDF link annotation
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83412e2a65---81155649070.pdfIn PDF document text
    • http://antonellascarpittadesigner.it/userfiles/files/29812942201.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/t3n58soa6knij6k45ed4pco6f7/pimiwebokopiruseboliz.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160f020a787414---dikomuzefadagigutibuwe.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/3155d1c35b5910bd776a58e5013e70cc/9535524149.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210522162168353513.pdfIn PDF document text
    • https://floridagreatescape.com/media/file/zajuvapufe.pdfIn PDF document text
    • http://ansonseatery.com/uploads/files/31080481405.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/22561839803.pdfIn PDF document text
    • http://ibrahimabuomira.com/ckeditor/ckfinder/userfiles/files/51113538019.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/d116d4481f40267d453a2e75d225adcf/58017473991.pdfIn PDF document text
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/6899791872.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606caedceb641---72802108765.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/82381fd5d806b9f62806e7e51f6e0860/pononavimilafiga.pdfIn PDF document text
    • http://inezorviskids.com/clients/37546/File/23898217594.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/9bacdafc8aba37732ed8e914372d1c1e/vexirotoxivub.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706f5a773b2---zafagofimezesud.pdfIn PDF document text
    • http://clinicoral.com/img/userfiles/files/78189185855.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/ade18d56f92ftks6fph9fmolfj/77574195834.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/9be3743e2a96114305e5a548f0c5bc5d/79141714047.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17045738571.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/000edb25940749f6ede34cabad5555ce/kokunurotunavitoparifosax.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a62263831c---9900300162.pdfIn PDF document text
    • http://falls67.com/clients/50406/File/1646650394.pdfIn PDF document text
    • 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_off00017080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17080 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00018892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18892 17828 bytes
SHA-256: f5809bbe637445db3b1d6b34f6697f60d4f009c35ad4ba1174891b78905ddec3
font_02_sfnt_off0001b76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B76B 11048 bytes
SHA-256: fafdcbe3c22474621d76a9e66fb0e93fe0f8807ed467537af832cb572848c793