Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6c9e2ec32162bf…

MALICIOUS

PDF

93.9 KB Created: 2021-08-03 23:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f49663c46e97d2c710e92e2ed3317b9e SHA-1: b301b82003a0ecfad45bae7f1f2769ccc4e43ad7 SHA-256: bd6c9e2ec32162bffcea2104709e3f6d643256a5d5fa3834c22f088afe8dd81e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to WordPress upload directories, suggesting a link farm designed to host or redirect to malicious content. The presence of these links and the overall structure align with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/i5asd3aucmkhftuicbnheseghf/tibepetolofusogevoluvebi.pdf In PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161038555bb661---mixugafuvek.pdfIn PDF document text
    • http://sporteambiente.it/ckfinder/userfiles/files/namitexujil.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/bej9o53bulrpjkf0mb5vcrnv6g/95389434972.pdfIn PDF document text
    • http://kasargod.net/uploads/file/zonazifelulojomiregowib.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/texamepuwuvinigar.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/33394708777.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/247fa524e9a72fd7cd0f7979191430af/tijufatiretudilexolew.pdfIn PDF document text
    • https://prosaison.fr/userfiles/files/ravujikunape.pdfIn PDF document text
    • https://grnca.org/img/files/files/73175321939.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c51d0496e2---26406541783.pdfIn PDF document text
    • http://hanart21.com/files/userfiles/file/97685857656.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/4219250cc81a18fbbef39cf3ff5c73a5/82194529764.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fe7ef59128b---bunupilujutazek.pdfIn PDF document text
    • http://heldermusic.nl/ckfinder/userfiles/files/9736880105.pdfIn PDF document text
    • http://statewideroofservices.com/clients/b/b8/b825a24af54c157c196cf52173d75bf0/File/mugomelumodu.pdfIn PDF document text
    • http://cci100.com/clients/57496/File/fazidokekivinudetadutu.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd832ac6957---sukalimobamorikutozu.pdfIn PDF document text
    • http://mmckno2010.zkosuchdol.info/files/nilufedag.pdfIn PDF document text
    • http://waberry1969.com/clients/877040/File/tesibagovusimekas.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/66b7299fd81a9353669e03e49cae40f4/10905491696.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160da61a320f17---89242986384.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/38603702009.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/61665970806.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=plazma+burst+2+hacked+unlimited+health+and+energy+unblockedPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04C 16276 bytes
SHA-256: f200293808f6dfdec89f1f082306738c3ed3a6184eaa0a147dcf690413c39718
font_01_sfnt_off0001064d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064D 17628 bytes
SHA-256: 2705dddb95d9b53181bc74bfdcca5bd469a8df8f8b9377cdecfd6724cb3226a6
font_02_sfnt_off000134a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CBE 11444 bytes
SHA-256: e33c7f2e99663986affdb776604470d2ae3b7724cec43f86f138af34b5c162a4

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