Malicious PDF — malware analysis report

Static analysis result for SHA-256 418afaeeafe8b6fd…

MALICIOUS

PDF

82.6 KB Created: 2021-09-01 21:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2103ee3b9e7d9b5108ac21762d019b3e SHA-1: 0ecbcca33d857f579bde25e4b214615b5578aaea SHA-256: 418afaeeafe8b6fd95184b0513b2c1023616d26b9df2d72e8ce3876e88d97c7a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to compromised WordPress sites and other domains, suggesting it's designed to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a phishing lure, potentially leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://philabc.ru/uplcv?utm_term=overdamped+arterial+line PDF link annotation
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc7d9dc428---39936016139.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/cbcec9bb8e21c5b1ec41868bc01e7e93/gibuluz.pdfIn PDF document text
    • http://www.eau-msu.ru/ckfinder/userfiles/files/58434558343.pdfIn PDF document text
    • https://brtim.com/uploads/wysiwyg/files/jenazizu.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/593c2cf5fbdcfe41a532cf6be7fcaf3a/57630966760.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/kuremegefu.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c676b763a42---47048465550.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/lajotamukejakuzedisa.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/11634538955.pdfIn PDF document text
    • https://piauiaqui.com/ckfinder/files/tapodawadu.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/siwapi.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/piwazidibofeg.pdfIn PDF document text
    • https://www.ventisilva.com.br/ckfinder/userfiles/files/19595684646.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160f8ac88ec90b---93103156950.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126962bc2893---wajud.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/k34dulk046adgv5j66o3rrq5dj/16001972269.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/35288385785.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d479e3c0b5---43994372718.pdfIn PDF document text
    • http://henrysadiereunions.com/clients/876463/File/3309931729.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916f059f3fc---zevekoxedozolunafaki.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1d91e40c1---4426042865.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/e87d4d22fea7b76ecf3c5032c30c8324/wirakoxudob.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/64400877451.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b54cbf740---71226335900.pdfIn PDF document text
    • http://dyccpharma.com/upload/files/xipituburufegulupo.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/gopute.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/talegig.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_off0000deaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAA 17352 bytes
SHA-256: ce72aa872231f9c5af067fbd3e5e5c23c142d0a4546444f2629964126ceca594
font_01_sfnt_off00010c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2D 10356 bytes
SHA-256: ee7452e8be30e62aa94379440687564891dce0a7863c7575c44745f07e8c86af
font_02_sfnt_off0001238a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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