Malicious PDF — malware analysis report

Static analysis result for SHA-256 12b02011f2547e27…

MALICIOUS

PDF

90.6 KB Created: 2021-08-03 19:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1cbea548bd7ec614efa6eb596926cbe9 SHA-1: de00cc1681e7ae8027b9d88e0537a8cbd4ac11f8 SHA-256: 12b02011f2547e274bcfecdd38d19da83d916beaf473e7305d8068b7dcecef95
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains embedded JavaScript and functions as a link farm, directing users to multiple external URLs hosted on compromised WordPress sites. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e738b3570---jamolapirujo.pdf In PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/2030d7f665c0e87306b8f06a7aeaec82/favaxide.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/e5bf80a6132de2c05fee284e0a5f52d5/7239048798.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160fe0b9e38905---finisafaduxuvakogew.pdfIn PDF document text
    • http://ctnphrae.com/ckfinder/userfiles/files/14011418886.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/52984387108.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/litezajepegipamozetexo.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/78310341855.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210513174743.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/frv8368qacm3h8i92pgpjg2h2g/10169965706.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/4512432713.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d42be2269a---54166664582.pdfIn PDF document text
    • https://confidence-ist.com/ckfinder/userfiles/files/vedemekemari.pdfIn PDF document text
    • http://omgmediatank.com/userfiles/files/visoguxilunija.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5ff721773---62251443398.pdfIn PDF document text
    • https://memorybg.net/app/templates/js/ckfinder/userfiles/files/36616559698.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/66753929938.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866c95b46bf---riwomukonejejatumuv.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/4b8e22071c4c411a87214e7f0e784150/piporobisikatidupu.pdfIn PDF document text
    • https://khanikango.in/file/6872483673.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/medabudabo.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/rapejadar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=priscilla+shirer+armor+of+god+week+2+answersPDF 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_off0000fde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000115fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115FC 11124 bytes
SHA-256: ba7411f051c6f5b7313fc6aa7c4a8bdfbef93dd6c4f0a1e025a0d53608f071c0
font_02_sfnt_off00012fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA4 17136 bytes
SHA-256: 42f0682a9b2cbc7b3e88a6b74019299a4880881851fea67d34da27ab80f8795e