Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba7c0f4c6d7c2f6…

MALICIOUS

PDF

84.0 KB Created: 2021-09-03 11:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e568a96a2341e66f80f6bb6306cf777a SHA-1: 961d8f5a99fe70ed0e23b52470a521f3e18330fa SHA-256: 0ba7c0f4c6d7c2f6768a04b2f7a4ddc2d652bbbe37a250e555ee0e413f941c7e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URLs, many of which point to compromised WordPress sites. This indicates the file is likely intended to lure users to malicious sites or download further payloads. The ClamAV detection and ML classifier strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=pathways+1a+pdf PDF link annotation
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5d4674472---pelonilumujisamegoxapi.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/vegefivowokijok.pdfIn PDF document text
    • http://laiksmodalux.lt/app/webroot/uploads/userfiles/files/ximokiminalaxeniwumi.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/581227b72cfd584f2f7211fdfed908b7/gejazodefokamaju.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/zugujakuwefumavap.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/puzumofuzo.pdfIn PDF document text
    • http://goodwill.as/userfiles/file/97582744612.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160900f14deca5---pipuzafopasozefevibil.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/70120884527.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/79907493350.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20210710110158.pdfIn PDF document text
    • http://besteva.com/upload/files/tebekowa.pdfIn PDF document text
    • https://epiphanych.com/images/file/37349978110.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/tosawowopeburuvinotonija.pdfIn PDF document text
    • http://studiomarcheluzzo.it/userfiles/files/niriderujatipo.pdfIn PDF document text
    • http://www.gitialiganjlko.org/ckfinder/userfiles/files/zulopefukabaxufepumuzev.pdfIn PDF document text
    • https://cupanghitam.com/contents//files/mudiginasomosobat.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/31100474894.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/3u1pilsejua9g4d854nde7ac01/46325442098.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b82badf8dc---29994957035.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/wupuvudekad.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16075dd16f1aa7---gufuxaxajejapazow.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/36058361774.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD903 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF115 18096 bytes
SHA-256: 69d18416cc0dd7429ac35a273eee5343ee48059531e8b71617e87bb47fd05c6e
font_02_sfnt_off00011fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FBB 10252 bytes
SHA-256: d13754f5b7e6201842c481892b252897ec85241a9ce8ff9c047358f1c087f9cc
font_03_sfnt_off00013703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13703 2160 bytes
SHA-256: d35cd7befe0e13644f611e809c6d233f3546688d22d6aa47982a121dfa8fbcf6

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