Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e13a7f2c1669e75…

MALICIOUS

PDF

92.2 KB Created: 2021-07-07 19:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: b343bb2ec0b5086be5fdd7e426d0de1b SHA-1: c19751ba57a81b4049649240bb170c5949264c39 SHA-256: 2e13a7f2c1669e75495f2a08677115b0980c21affbc447b2e87b31b236246602
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external URLs, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://queure.ru/uplcv?utm_term=sonic+adventure+2+all+chao+types PDF link annotation
    • http://www.anclupnapoli.it/userfiles/file/64912292332.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/nuvekag.pdfIn PDF document text
    • http://aceranalitik.com/ckfinder/userfiles/files/gagufolejozagozujo.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/16230483596.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/8f2b24c9829096b385e59fa5185cf4f5/xezidegewowa.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf610762f6---45482357475.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/51459762601.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/77214640533.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/38288975911.pdfIn PDF document text
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/81e53d03bd0678462f44454a3eac7687/kiluxunariguw.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/89128943577.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/6461c1a02a2ca5d2d0fb8d69197d5408/93616733826.pdfIn PDF document text
    • https://grancom.by/upload/docs/15992665452.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/d8584dff1c1ec64912039c2619c01bfe/nuwakuwolajexor.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/68010956376.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/ps85ucuv4vnu4h5ngob8mt1635/28399178835.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160a789ce7e516---sonofebagatetez.pdfIn PDF document text
    • https://petala.gr/userfiles/file/wulagedaxin.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160a230af1dc7b---naluwuwak.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/acb3e2cd704400e44c5b812f1d55579c/61927712041.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/c30f67f523bd4dc2006ca4975900cea5/38434813693.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6241d40522a117c231ea25dbfc703e1e/wemexozo.pdfIn PDF document text
    • http://terralindahigh1981.com/clients/866868/File/35942182240.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC9 17712 bytes
SHA-256: d56850925f435f07e9ad7bb83d6123839370f687d67c6b0babbf70eae652a6c3
font_01_sfnt_off000128c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000140da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140DA 11088 bytes
SHA-256: 27507bfe25b0cd35e708879e3873faa1df698524179f98dcae98b09f4c18bf3b
font_03_sfnt_off00015ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AB5 1932 bytes
SHA-256: 6e6d7de7f3a9e012ef98202679ca83029a117e46cfeebe3874c715f339edbabb

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