Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e362397a7a3837c…

MALICIOUS

PDF

75.6 KB Created: 2021-07-16 10:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3740f5eadb8675335b23ec24f68e23d1 SHA-1: 836028075ed02377024a7864f70cc195bacc14f8 SHA-256: 2e362397a7a3837cf532f37cfca4b2ef244ba1dcdb06a6a4e4bbf7b6104f100b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm or SEO poisoning attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/3b2c462407a7484ad3655873c145a56c/sowasufupogizalubud.pdf In PDF document text
    • http://dansensvenner.dk/imagesfile///kuzuxopikisure.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cf3cc1932---37915473308.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/27d4a4b04d8226ff022e3451a32f81ee/zovagajimurefa.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/13858075527.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/c7epbh790rfq8tjhjj92hsjigr/jugekama.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607792594e1cc---rukulujuruxalanoturin.pdfIn PDF document text
    • http://wahibluedevils76.com/clients/5/55/55d7338a7abcce318bc847d7f34994f5/File/50133368799.pdfIn PDF document text
    • http://edsmithestate.com/clients/8/8f/8fcea3baa00381bb68ca4dcda22eb4c7/File/14551986463.pdfIn PDF document text
    • http://nwatchonline.net/userfiles/file/xidejasosafezeneb.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160888f04422b5---60086332688.pdfIn PDF document text
    • http://cpils.com/userfiles/file/dafogaliloteba.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073147758c09---gosokuse.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/34cc2ebcc2d84cefcd9253ef7024faa0/pibimo.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/81958d0362fa4e64bd74e1ebe19c3f53/51879445173.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/5136b4ec1059450f6f31471a62c163ec/wupanijukusokofomuxeg.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160d1b926b48b1---97980346171.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/pihtqipp94fa6m0mfbce6g4d61/14891811322.pdfIn PDF document text
    • http://autoklej.pl/app/webroot/media/files/jebujorewutiw.pdfIn PDF document text
    • http://daydala.com/userfiles/file/78702727593.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/3fbc5066a66e862a3a7b425ec22a2bc7/dopemojawedi.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/nogufogejek.pdfIn PDF document text
    • https://actorconseil.com/files/file/22551386123.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/6m2vakls2lermbvm36emr35ur1/xidodoviwedajowagitaluk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=brazil+currency+in+pakistani+rupeesPDF 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_off0000b529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB529 10664 bytes
SHA-256: 30e5f7d834188f3e4d406d294ba6bfa1b05ee13aacc432723d83a5f0530af55b
font_01_sfnt_off0000cdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD0 14612 bytes
SHA-256: afb17f6cbf4b3f12947d74f28797d958b287b17ccafe061ce7a3b2369ae0b974
font_02_sfnt_off0000f285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF285 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00010a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A96 16300 bytes
SHA-256: cb22297cb345efa2b973a5529f7d34f362c2fa401ecec879e64cb16b1dda6a81

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