Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ded35138fd19fca…

MALICIOUS

PDF

87.5 KB Created: 2021-07-18 13:36:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: a878c1821d11b68914296bef0817ea9f SHA-1: 4a987eaa43488a4ac609026923d2a028905b778f SHA-256: 0ded35138fd19fcab0d073fe3862a41d512e14dd6b525a4305611360a2004ddc
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate the PDF acts as a link farm, pointing to numerous distinct hosts, many of which are hosted on compromised WordPress sites or disposable domains. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://divinenine.net/userfiles/file/39858148081.pdf In PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/6eeb77e73a919a01ef8526f501e8bc3b/lumovenigadetarelitabe.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/d52835265d78e0b04260b4d699beac14/15417741278.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b83c9ab54---98081814310.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c67c1e16607---44622544870.pdfIn PDF document text
    • http://thefjordbaklawfirm.com/clients/876731/File/84922816130.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ed7a3f37f---43750002384.pdfIn PDF document text
    • http://sovaimm.it/userfiles/files/77512819278.pdfIn PDF document text
    • http://centroolosprato.it/userfiles/files/bizaxetidamaremamax.pdfIn PDF document text
    • https://samowar.ch/upload/file/pufinakevoremuxow.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bd329e6be---71376711586.pdfIn PDF document text
    • http://friend5190.xyz/js/ckfinder/userfiles/files/12273212546.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdfddb4caad---13746190108.pdfIn PDF document text
    • https://prosaison.fr/userfiles/files/giforawiriginutasa.pdfIn PDF document text
    • http://splogservice.ru/content/file/rubakogixid.pdfIn PDF document text
    • http://distributoram.com/files/file/38103641059.pdfIn PDF document text
    • http://americanpetrochemicals.com/customers/CMS-IMAGES/file/82739217588.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97c13a0f47---3175499445.pdfIn PDF document text
    • http://cancunday.com/travela/img/files/pupejedidukowudikuvar.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/5d8e5e322bf6c5e6911133b68847d5e2/20347418218.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/d509664a68337c4e40789424e616d170/mizativepawobixipuwenus.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/xutumevinodopi.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/44a738769fd6c81e95a8404106f95658/lozuzutel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=insert+image+in+pdf+online+freePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 16144 bytes
SHA-256: fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516
font_01_sfnt_off0000f1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000109b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B3 16896 bytes
SHA-256: cf36167081c4bb6f5e76d0d41f9839ccdc4644cf490ad13bcd1074ccc8698a8f
font_03_sfnt_off000135f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135F8 10792 bytes
SHA-256: b0c945f0a4f91e07c97f8ba22467164ceb4dfd6a1043dca371e4d03e4d812141

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