Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9f9db8bc7a3561…

MALICIOUS

PDF

85.2 KB Created: 2021-08-16 17:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 38245be8909acb7052cc08fd70e798df SHA-1: f06e59e923fad77eb2cdc19e4a2c8b59024b25af SHA-256: ba9f9db8bc7a3561e5abd2d0e59f6e8da1f3ea428d556103fd93c4908ea13985
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a link farm pointing to multiple compromised websites. The primary purpose appears to be directing users to download files from these compromised sites, likely as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://synerhu.ru/uplcv?utm_term=fast+and+furious+9+movie+download+in+hindi+filmywap PDF link annotation
    • https://araprinter.com/ckfinder/userfiles/files/83607015563.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/40576033211.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/29425057916.pdfIn PDF document text
    • https://machnhaduong.com/images/uploads/files/73464345097.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac26050a3b---xaweso.pdfIn PDF document text
    • https://greenlandpark.com/uploads/files/85016752636.pdfIn PDF document text
    • http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/finukonefum.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/r9n5g1la028mh7eji1romlcbvv/wepozalotumutukagomax.pdfIn PDF document text
    • http://covinahigh1980.com/clients/1/14/147ee80f0cf2e08ca1b5067d21485a43/File/45440135073.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/takufamale.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/42221896730.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16094141fcc6ba---46546434055.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/jurudixowikun.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086830990996---58160361824.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6a6a6b0fb---sadabofizufoxekavepirupo.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/91238797902.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a69cad1e14a---42772342986.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7b495b3ea---6936746337.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16073a60b4d1ad---viwenojozesakamujupanixos.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/sofodireboxasak.pdfIn PDF document text
    • https://octvads.site/js/ckfinder/userfiles/files/fupalamijufopa.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/h7jidnpm4hqipcaieca89vtq7r/78908334598.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DD 16960 bytes
SHA-256: d8bc207e4b13bed3aa9cef6bb66fa603856cbad49792200293db112921499aaa
font_01_sfnt_off000113dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DD 11276 bytes
SHA-256: 9c852b2ae0437b22e6cd4847c4532007d00a88afa8a0b3be28d9e02058556c03
font_02_sfnt_off00012e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E3A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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