Malicious PDF — malware analysis report

Static analysis result for SHA-256 5847e9583ce9874f…

MALICIOUS

PDF

88.7 KB Created: 2021-08-05 18:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2cc248c8ede168a1c805fb81fee93fff SHA-1: 47478fe07cd6fc97224a4be7de2fa81b9405c8b6 SHA-256: 5847e9583ce9874fdb3d12f97bf476ef3129ad57aa00583ab92e47ce8991e6f5
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites or disposable hosting. The presence of multiple links, including one to a compromised WordPress upload directory, suggests an attempt to lure users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://samtekelektrik.com/files/zorezoj.pdf In PDF document text
    • http://nw-line.ru/generic/uploaded/80959016629.pdfIn PDF document text
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/21654656166.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/45072d32ba06f34462b8ceb61c808a78/27889515723.pdfIn PDF document text
    • http://bscartridge.com/pic/43139867093.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085258ad036b---sivulifegavisozefijipa.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/giramolidemunorexowetop.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/marupajilimonovesated.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/wigotigugubeforuvinaka.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/b7vmgur89bd07ukp424ck7du1n/diwisaniripoxisaxipof.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/c03a6887e5c93d7bba32c9a43691d783/petuwuratuzewujefupusimuv.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2d18bad02---98813674560.pdfIn PDF document text
    • http://edison76.com/clients/5/54/54c13950cbd15a81e6fb4362eab8f273/File/wizijetuxezirafesaj.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/g2s7e3g0b5u4iiteuigipq8ud0/23182524725.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/lejajez.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/faxobi.pdfIn PDF document text
    • https://spitalmoldovanoua.ro/ckfinder/userfiles/files/40110313334.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/4019f5a9604228fda897cbe2b64fe152/kabidusob.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/9257f10ff13ce946d401cc102f49044b/52266432716.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/bd54a40c87090dfecf0d42c440fc3895/78376081381.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/c704d763bf844e5c6f403d7aaa8ee82d/ruzaraxamijawapigeduboriz.pdfIn PDF document text
    • https://balajihighfields.in/userfiles/file/11973752687.pdfIn PDF document text
    • http://bestapp4u.com/admin/uploadedfiles/file/61436279634.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/85067573302.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/vivogepaloxefirad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=bitcoin+trading+platform+softwarePDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFF 11100 bytes
SHA-256: 93634a852280cdef8756a1d4d5cf778105f8bd04ab4f43a6205a9fca41d5d269
font_02_sfnt_off000126c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C4 17456 bytes
SHA-256: 860ab144a91de5ae386077865dc4ea010b89c6e8ef624c16f7ce41494174787d

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