Malicious PDF — malware analysis report

Static analysis result for SHA-256 080ce4142ca7bfbc…

MALICIOUS

PDF

86.7 KB Created: 2021-08-16 16:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a6e65a58c83540afd25c327dc7cd9d55 SHA-1: 3d374233df671eca44d5d4ae0d376f5acfe6087b SHA-256: 080ce4142ca7bfbcde91252dbfc5f8625d65bc80fd74682701754d1eeb524ed1
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, containing numerous URLs pointing to websites hosted on compromised CMS platforms. The primary purpose appears to be directing users to potentially malicious content or phishing sites, rather than delivering a direct exploit within the PDF itself.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/4debd3fd1634d37f1a4d9eb17e877df1/14101060312.pdf In PDF document text
    • http://rymwid-training.com/userfiles/file/87284653945.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b3297ba3b00---nanusumeka.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e5ae31eff---30369050679.pdfIn PDF document text
    • https://coastalholidayproperty.com/ckfinder/userfiles/files/35764254814.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/jenofuxepugisexasota.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a540644d9a2---podezorimid.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/larinasadike.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/pg3hfjqd8sec296r7dql048tq4/somuvelut.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/fopezubo.pdfIn PDF document text
    • https://www.thaiahpa.com/flash/files/zasubazeno.pdfIn PDF document text
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/lazoxodir.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/52176544746.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607588739e129---zuvegeradamobalule.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce18f568f19---13033552766.pdfIn PDF document text
    • http://0965818789.com/CKEdit/upload/files/warusataronalukilabunuw.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/a158eba114821d7dc6ea0ec909ec1b9e/pewevujere.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/duxebepigujigufazifuliwiz.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/91044062162.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/c6a737j705o9qi6r0qccbs2p5v/33560432731.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160df3f215814a---gozazomapowezewej.pdfIn PDF document text
    • https://ip-pharma.net/data/files/podajikuzebuve.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+write+a+letter+for+being+late+at+workPDF 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_off0000f10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10924 10532 bytes
SHA-256: a88bde9ce48f435c662ad720bbadb23ec19ba1b51e7a8ec0ebc5b95e916be482
font_02_sfnt_off0001213d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1213D 16796 bytes
SHA-256: 3f909164572b541ad50db6664dc5e101d7fc3573e53524c5aef51bd681ed4e48

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