Malicious PDF — malware analysis report

Static analysis result for SHA-256 8814216cf88c1739…

MALICIOUS

PDF

75.1 KB Created: 2021-06-21 20:35:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0eba79eae178f4cdc05491aa696bfc10 SHA-1: 9df515c9677e7b437337b08e6a918f5a4e3069aa SHA-256: 8814216cf88c173984567eaaff9d5ecee2575e6a8eda608541f2d52a4b8fdae5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and link farm heuristics indicates an attempt to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

Heuristics 5

  • 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
  • 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://allytemp.ru/uplcv?utm_term=mark+harmon+luke+skywalker PDF link annotation
    • http://covinahigh1980.com/clients/1/14/147ee80f0cf2e08ca1b5067d21485a43/File/lugekedidumepetasiva.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef40dba2a1---suvodapek.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/8fhure70fthtudiq2e7uh099t0/82633711065.pdfIn PDF document text
    • http://contactconfiance.com/files/files/siwifekefapilime.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c68db83417a---33029745711.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c7ad1677ef5---kiwanajokadafo.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/oll5ihb77mfluci9liiimmsp2r/79550045358.pdfIn PDF document text
    • http://myboydfamily.com/clients/7/7f/7f513a2250c12de81a70a6735749c289/File/fenosafigeg.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/baxodatomavagefaxi.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6bda4b2bd---noguxa.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/4mlbmtgjdc1e7r66va81ck3ok0/sagavopimufedi.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/86206871804.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609c813a4413c---32377690080.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/5890374037.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8b687d3f9---52835545635.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b494063c990---notoluropokoxagisiwaluli.pdfIn PDF document text
    • https://proxus.nl/file/zefopufedadovuwudimevixo.pdfIn PDF document text
    • http://pvhs1967.com/clients/a/aa/aa78cb05297cd93d8a9ab6bd1eb8a3c4/File/motinamuxelojexegapaku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF445 5188 bytes
SHA-256: 067260944539a3486a4d5e6d986217874102be5d1e55db07507c573bf97727d9
font_01_sfnt_off000105db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DB 12636 bytes
SHA-256: 4f8164c539b5391d241f915610ef6adb4e5e5a5acc2954131fe58140e687985b

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