Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a520f92ab5d416…

MALICIOUS

PDF

78.6 KB Created: 2021-10-06 23:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: a1e4a45661b53595c8d0efa7879999ec SHA-1: a48abac78b678a67aa6bf6a54d23f160644ff204 SHA-256: 69a520f92ab5d416e04fb7e46c02028a7e508789906bd5bea7f0c9dc8d3e6ac2
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites. These links form a link farm, a common technique used to obscure malicious destinations or distribute phishing content. The presence of embedded JavaScript suggests an attempt to execute code, likely to facilitate further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d7caf026a6---buvagikatavuban.pdf In PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16141f5e75284e---dazugusifu.pdfIn PDF document text
    • https://autopsrus.com/ckfinder/userfiles/files/18755618537.pdfIn PDF document text
    • http://chrislahoda.ca/userfiles/file/mubomivasawujuxikaxu.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/57302586523.pdfIn PDF document text
    • http://anael.fr/fckeditor/userfiles/file/41108713634.pdfIn PDF document text
    • https://nistd.in/userfiles/file/78299459386.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/6nt14g4qjk6peogl00mr64417v/kutok.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/54556452025.pdfIn PDF document text
    • http://technimexvn.com/images/ckeditor/files/jujuzo.pdfIn PDF document text
    • http://imcborivali.org/userfiles/file/xakozinifal.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/f005a2a716108b850325b52ae84b3d9e/fetolazevu.pdfIn PDF document text
    • https://davnosti.ru/upload/77867278320.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/vepulirosa.pdfIn PDF document text
    • http://www.autodesguacecoin.com/ckfinder/userfiles/files/6576150422.pdfIn PDF document text
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/bawotako.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/3351447341.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/u547g3ldqef4l4nvnh808jh3r0/zoteguzi.pdfIn PDF document text
    • http://fiumaradelsossio.it/userfiles/files/tusalo.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20211002165627.pdfIn PDF document text
    • https://deltarents.com/upload/ckfinder/files/29812515368.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/noovgcf5tdjcm8vspggfb486tb/95306201261.pdfIn PDF document text
    • http://sourceandsecure.com/uploads/userfiles/file/mofitilinebizabefexizet.pdfIn PDF document text
    • http://baloneacessorios.com/_upload/file///80998225055.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/83676699516.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=meaning+of+overlapping+in+englishPDF 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_off0000c2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F2 22164 bytes
SHA-256: 68661bab8000d0b7f4c9bb0a0720750974002e83716ad936c7ffb3b3bf493e05
font_01_sfnt_off0000fc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC87 10600 bytes
SHA-256: 3b0fc11c0cb92bdc1167c42a5c326f574d408488f33f074b7ad346f11c7b0c2e
font_02_sfnt_off000114a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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