Malicious PDF — malware analysis report

Static analysis result for SHA-256 7029f4e049d41776…

MALICIOUS

PDF

77.2 KB Created: 2021-08-28 08:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4e9f0e3fc0cccbd765f804f5cc8eee23 SHA-1: b12aaca6bab8308ac1e39988e1b560e4911833d0 SHA-256: 7029f4e049d41776db2fd2e0958209b2b4cb665e10c0f598050d3d4e594237a7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious or phishing content. The presence of embedded JavaScript indicates a potential for further malicious actions, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://pixomot.ru/uplcv?utm_term=export+dwg+to+pdf+with+layers PDF link annotation
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/05f658a106b506b93500dcbcd49aa1f2/32026504365.pdfIn PDF document text
    • http://www.eatvirukai.lt/uploads/files/xavebuzuf.pdfIn PDF document text
    • http://jeremypourstarlight.com/clients/5/53/539822683240d2210db56c0084569a8b/File/lodumovawe.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b49dbbcd28dde0ee24cd99d224b7e4de/58579349172.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/6973350941.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf628a13a2b---tawukonizikopanazanizozu.pdfIn PDF document text
    • https://stiff.pl/ckfinder/userfiles/files/85557936183.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608948e9429bc---mulidupuj.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b082fce69d7---puzulurawedawudavumuz.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9b648681d---41543635811.pdfIn PDF document text
    • http://www.tiendadelbordado.com/ckfinder/userfiles/files/230792150.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc9d28a3b6---37805353121.pdfIn PDF document text
    • http://rafaelstore.ru/upload/files/75757119394.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f038b72069---fujejabonisebaduvivowa.pdfIn PDF document text
    • https://nutricount.cz/UserFiles/File/jasamexodofejepati.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/5ffc6b25a151aff9908de105661481d1/pesexires.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/qb7h8mt9trr2gjifm9at729uvi/3647457401.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/memuvikuxuvabesiro.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ff477b3f8---97689187719.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/7hdb5lr14vk4drmjnkcoe1sqat/85183715784.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/b8552b2db6c0f1a26acb8ce73bb42d9d/wofojizamupigu.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/navivozo.pdfIn PDF document text
    • http://sowitech.vn/upload/files/13008776884.pdfIn PDF document text
    • http://hoshitorionline.com/uploads/files/gotutesalusurifijuxasoxo.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_off0000c7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFC 10956 bytes
SHA-256: 37373b69e7d3b0ffccdb1e397eec1708ad4c678e50f340646a3a19615f680441
font_02_sfnt_off0000f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95C 16776 bytes
SHA-256: 50f9616e6c8e696a6181eab64e27da6f400c74045cf3f8f9d61fd9ae9713b466

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