Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4b0181219aabc65…

MALICIOUS

PDF

84.7 KB Created: 2021-06-10 00:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f5505129e9727f3ae2535954cfa4ba17 SHA-1: 18903717a17979572a49d9fb59998245c626ca10 SHA-256: a4b0181219aabc65b3f23d26689813e0efbb97e2c5d3638b1a599b015ce38d38
156 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to various websites, including one that appears to be a compromised WordPress upload storage. The presence of multiple URLs, some pointing to potentially malicious or compromised sites, and the ML classifier flagging it as malicious, indicates a phishing or malware distribution attempt. The document's content and structure suggest it is designed to trick users into clicking links under the guise of downloading video songs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://inwebjor.ru/uplcv?utm_term=hd+video+songs+download+isaimini PDF link annotation
    • http://oreade-breche.fr/userfiles/file/wisazafi.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160925f46914a3---5708286038.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/0709e913f74d8858124f89472ec62036/65210983496.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160be9bb868ac8---48433016367.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1ae4bc16d---datamimuregofom.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/efff2ba65e4f1dc278be6e74edca083c/30284805295.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070878592236---74117465318.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/9dc68bbc07483d5b507cbf228091fd51/zagigewexarakotumugok.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e1e78a04c2---bilopar.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/47595052198.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/namuralitegedek.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/metelasonuk.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/269aa6489722ed39b2c08b1d19c6d274/rafewoz.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa167c04c5c---74003875563.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/79e6a4ecb57d4a24a8e74d5eb3282a7c/92752525683.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f96b719293---detujezizebopenete.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 5164 bytes
SHA-256: ef96ca9a2f7808f9dfc874fc9eb86e958532ba3d81a6d8d02fef52fcc739e2e0
font_01_sfnt_off0000fe11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE11 6380 bytes
SHA-256: 795cc896402e252cad2a4971c4ca0d0e20caa05bab12a7087f2a0069bdc4cfc3
font_02_sfnt_off0001119c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1119C 3784 bytes
SHA-256: 4c53e793b0da77658152a0278d027ecdb3ddc6ac28919787de7d321bae8a1dfb
font_03_sfnt_off00011f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6F 11016 bytes
SHA-256: 950fd440f95961960b1b78b410d5150afba4be5055cf005aa139b5489870bb81

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