Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede0c13bc220a8df…

MALICIOUS

PDF

88.0 KB Created: 2021-09-12 11:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: dd117a4f210770d08574a5e719bf4c88 SHA-1: 99be84f8f473162f448e642c8c723ca06bba0b81 SHA-256: ede0c13bc220a8dff55d9181ac3f5bccdc6c6eaa137f84f9266e7cc4ff91383e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous external URLs, many hosted on compromised CMS upload directories or disposable domains, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted, but the presence of numerous external links indicates a likely redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://status.cz/UserFiles/File/22996549931.pdf In PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16130af575fbef---galuwakigezodasipe.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/576f4fbf9737d7ab8953671e465361f9/fiwimilopunajabuwapo.pdfIn PDF document text
    • http://sinosteelcode.com/filespath/files/20210904165239.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/59161637742.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161321ec7c877c---86326491736.pdfIn PDF document text
    • http://brava-ekb.ru/userfiles/file/40261105853.pdfIn PDF document text
    • https://wct.goldcrownresort.com/magazine_files/files/risogulivirakuxatilikefo.pdfIn PDF document text
    • https://cortemadera.com/wysiwygfiles/file/vafiwebomabegilifagipaniv.pdfIn PDF document text
    • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/66391458214.pdfIn PDF document text
    • https://tepatsasaran.com/contents/files/wobutinuginipasel.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/4u6cuquij69lgih1aen1610mj3/82718412205.pdfIn PDF document text
    • https://renteci.com/imagens/file/91919939675.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/17581271702.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/66cbe380c78cab0aef3e26f354a88686/latorusowajekujovuf.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/78203814378.pdfIn PDF document text
    • http://ontis.sk/editor_uploads/system/files/batijadozijetaxemew.pdfIn PDF document text
    • http://fiorenzuolatrack.it/userfiles/files/kusufakotarujodazo.pdfIn PDF document text
    • http://www.ssc-ras.ru/ckfinder/userfiles/files/rotigesokorok.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/88795574090.pdfIn PDF document text
    • https://rusepress.com/uploads/wysiwyg/files/muvililejupebu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=drag+race+vegas+revue+watch+onlinePDF 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_off0000f0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 10764 bytes
SHA-256: 5bac7fa1a13b4845a9a0b5ec19eee09e48e4146691173190d2a5825dbb511059
font_01_sfnt_off000109c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C2 18744 bytes
SHA-256: 5523310f94e6c1f7270aff3ce5adbeeba471b1ace10f6b2229c787b4e52de562
font_02_sfnt_off00013aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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