Malicious PDF — malware analysis report

Static analysis result for SHA-256 47eca79f2ef3c57d…

MALICIOUS

PDF

94.8 KB Created: 2021-07-16 05:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 767f089d08cbe52468fadef4df12e6d0 SHA-1: 6f4b283c3b879535c568b0256bdb57fe839494c9 SHA-256: 47eca79f2ef3c57ddb92d4eb1b920f680bfc4939675a7beae26096eeecaf462e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains numerous links pointing to compromised WordPress uploads and other disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious sites. The primary purpose appears to be directing users to these compromised or malicious URLs, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://queure.ru/uplcv?utm_term=why+do+cows+fart+so+much PDF link annotation
    • http://sovaimm.it/userfiles/files/fitaxakalepidenolegives.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/4302301583.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607db8e939cae---94955082261.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160914a4f99a75---janenufejopaviravu.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607008d31a137---mafuxowapi.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/1e9e44ff526efa25a9bfe5d206547fb6/50873560832.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/89701656935.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/f5c10f75466df8deb8c24598793df4c8/votaronewumemipenovi.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/21299641984.pdfIn PDF document text
    • http://mim2010.ru/userfiles/file/57280176957.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/c7158e1fc1655d9817c0f2383b79e8aa/87878802961.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/c2fb62170f5eee03878be40db2f019e5/45640339862.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/b41fce9172fb9400301a06165c610dbe/venazekerazetiditis.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/e540fb402cb93a4877b6a605499b1f7c/rekiv.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160930707c0723---64072681554.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/riwevolepezezabirak.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160849426b3e95---31874957633.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/fepoginuzewomamemibasol.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/c65292b568bfcc535d11426de139c3b6/81615468159.pdfIn PDF document text
    • http://mertlakustika.cz/images/pages/file/43038092488.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160ab279ec9033---dojuki.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c192d24cac0---vopugemesojiwojimagi.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/72734e7c1be3968e84dd132f30299bc7/55529952516.pdfIn PDF document text
    • https://elcoengineeringco.com/userfiles/file/20709422498.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_off00010e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 17868 bytes
SHA-256: 954f33112498066a7fcc75cf781c72c04a8b19313a7dafd3aa7c7d183a2000bc
font_01_sfnt_off00013d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D71 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15588 10660 bytes
SHA-256: 8da1511e858af497972bde4aca0ec68309907d5c72d6f2bdeb805bf0907ce669

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