Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aca19eddad338b2…

MALICIOUS

PDF

89.5 KB Created: 2021-06-22 14:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: babde953bfc9d4a65badfe8449cfc7c7 SHA-1: bae2b062fefe7ff35e948d9456ebf35b8c040be7 SHA-256: 7aca19eddad338b2600d4504680e73a32971eee3b4158166a025ceb760b30507
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs that point to various websites, many of which appear to be compromised or disposable hosting. The presence of 'utm_term' parameters in some URLs suggests an attempt to track user engagement with phishing or malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://catamma.ru/uplcv?utm_term=town+hall+7+coc PDF link annotation
    • http://radio-salsa.com/php/rs/filesupload/file/45306374457.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fcc10ece4---59809203984.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210525050210340548ge0sfw.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/3b6cf029e5eeb76d38db432c4370bca6/mukamalarazo.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/20017010444.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/5893a3f6c3dc957c2d86d0ca9a2ccf6e/22525533714.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/90197889636.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/tafasiliriruzowake.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/fcdea1625a21cf6d7b67159f37fc3cb6/jipaluni.pdfIn PDF document text
    • http://av-jet.ru/userfiles/file/65948742949.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/somebotopubabilokomutovu.pdfIn PDF document text
    • https://weddingitaly.jp/images/file/88428339958.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/qcptrtj9v2534k1e7hit8fjju3/77707958054.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/52cb119991ea790c02134049d8119561/jaxatijepenebofu.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c77b58e38d---motaxa.pdfIn PDF document text
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/pq5o2mdid4kp14ena3bniuu8bl/5783009676.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7e770c839---22389239495.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b4bc71ef711---razivesebukigegalipanajun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFE 4736 bytes
SHA-256: 366f298e71a43cee399c89c97d6f9909ef0d65cb76056604602f8cbef1e9862f
font_01_sfnt_off00012032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12032 10432 bytes
SHA-256: ce5e7059405c3c7d916c4a9772ccbc8539ebe8516aba9cbc02f587509e12000f
font_02_sfnt_off00014426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14426 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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