Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2372ba56221d7ea…

MALICIOUS

PDF

87.1 KB Created: 2021-09-01 06:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7bfbd633711afe112eb34c4b943304d8 SHA-1: 01a816f36fbe576462d28f20b8fc566f327adb15 SHA-256: d2372ba56221d7eafffd60b393857bedd49aa2f5738a2d5d59d070fc33dafebd
156 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, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress upload directories and other disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URI links further supports the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://smidgel.ru/uplcv?utm_term=conquest+of+canaan PDF link annotation
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609456d3cd247---86344561334.pdfIn PDF document text
    • https://investir-petroleo.pt/ckfinder/userfiles/files/73331365779.pdfIn PDF document text
    • http://washburnhs64.com/clients/f/f7/f75dc469904bb25755ea64d7551c4a95/File/mupegafelutilefopawi.pdfIn PDF document text
    • https://club-sports.net/uploads/products/files/32420749600.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/zupebonog.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/94178603889.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/72182096056.pdfIn PDF document text
    • http://ngocminhcnc.com/demo_thietbimay_24_7/upload/files/pabedasusimatefifexipuwe.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/12379639217.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/re8v2klubt8ron10c77gokphb5/71573291356.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160717c872022e---95618418051.pdfIn PDF document text
    • http://irina-beha.com/ckfinder/userfiles/files/ponasedagoza.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607249e4b83ac---7112843255.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/munopezilige.pdfIn PDF document text
    • http://wellgroup.cz/UserFiles/File/jupawoxamefudogewi.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/97baffaf1a6958cb40cee40adf2e806b/95067938639.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/regerovabupoxikiven.pdfIn PDF document text
    • http://medi-sen.com/files/files/29251259394.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708c8c923ac---72046551793.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/56600197595.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/5e0ac89ff2ed932a952a8cbf99bab05a/xerafujomuxejimipuduz.pdfIn PDF document text
    • https://speak82.com/_UploadFile/Images/file/11524826285.pdfIn PDF document text
    • https://viticoltura-enologia.com/file/20278904038.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_off0000eec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D6 18604 bytes
SHA-256: 4ef015f5c7e116712896dddd23d7b4d364f5cd585775bc66b3f68a14b5f282eb
font_02_sfnt_off000136dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136DD 10368 bytes
SHA-256: 5abd05dc79eeffe541bbe24471b2d4af39d2a3d89a69055684fb42a2c655c12c

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