Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc96fd4ac4c507e…

MALICIOUS

PDF

94.2 KB Created: 2021-09-01 21:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fc31f8af8ec63094f31d3f04420e046c SHA-1: 780e8b3ac06d10ac3c69db46096ca2631c95b725 SHA-256: 7bc96fd4ac4c507ed7fb7a7106df331afcb4075c5add298d34158929aaa9d9e8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aae2be5ab66---61753357900.pdf In PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/31660781173.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/f4f8612b3a9541de64d59a7567cbaee5/72024815037.pdfIn PDF document text
    • http://usmleworkout.com/files/file/32099422142.pdfIn PDF document text
    • http://burrburroughsfamily.com/clients/55468/File/32363955498.pdfIn PDF document text
    • http://oticonshop.com/ckfinder/userfiles/files/30462342900.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/siwuwumegizexim.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/68328261023.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607564e7d2532---bapewogixig.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/22ae5ba44981d54ca68f14922885d8c5/15143839469.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ac379be4317d9d12c7b1bc5299c7c433/zepukitaxina.pdfIn PDF document text
    • http://lightningriskassessment.com/ci/userfiles/files/ranubetebizibigewu.pdfIn PDF document text
    • http://altadirezione-consulting.it/userfiles/files/16756795216.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d85d91ba1a---98291179441.pdfIn PDF document text
    • https://confidence-ist.com/ckfinder/userfiles/files/govawatuziwujabojog.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608089baafdc2---14276207102.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/koxigo.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/06/24/file/96418707655.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/824c8634a4cc6324b12ea5519d9fc4fe/rusijazutitupot.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16121af5ccf9a9---41966333289.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/67018770282.pdfIn PDF document text
    • http://tischlerei-schlusche.de/sites/default/files/file/tubunekafuzagilakujogegi.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/a0563339af5e1044b8b1c5331308915f/23682767685.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=examples+of+answers+to+weakness+interview+questionPDF 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_off000108b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000120cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 11092 bytes
SHA-256: b8faa29adb6d1954e4642c7cfb5a3ecb83d64be1fa80f05462c9f361629dbada
font_02_sfnt_off00013aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ABA 18220 bytes
SHA-256: 5c0bcd92da4ae44f3962b695c2d19224a3c920d4abcf955f7441d0a53231521c