Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e01eaa40b4e7e4e…

MALICIOUS

PDF

73.7 KB Created: 2021-09-19 20:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 22a80308df07646696da4d187c4a6275 SHA-1: de9185a7a3c46401fd3892af6541c8aaa89e1211 SHA-256: 0e01eaa40b4e7e4e4613771eb39ac2caf288579f05170236a82f7a040e8fdd9b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for initiating malicious actions within a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 8

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://philabc.ru/uplcv?utm_term=area+de+jatt+song+download PDF link annotation
    • https://gamaconsultores.cl/upload/file/8475734368.pdfIn PDF document text
    • http://magicfood-cn.com/files/20210918200339.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd7432f315---femuzisuranewerowipuragaw.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/54338002635.pdfIn PDF document text
    • https://nstoplana.rs/ckfinder/userfiles/files/vozudebamigowog.pdfIn PDF document text
    • http://webursitet.org/Files/file/16883151052.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/267657262b9ba82e4d3f85df3e01f7b9/13066776046.pdfIn PDF document text
    • https://www.savininkai.lt/ckfinder/userfiles/files/togimuverozilogow.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f829fd9646---desanevewurelubodigef.pdfIn PDF document text
    • https://muahohangnhat.com/app/webroot/uploads/files/daradil.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/35461039083.pdfIn PDF document text
    • https://facades-et-traditions.com/actualites/file/34483967030.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ee5e5085b---48197782216.pdfIn PDF document text
    • https://otomatcilarmetal.com/otomat/upload/files/lifesorebajuzexiziz.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/duloxokajajedu.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/ditiz.pdfIn PDF document text
    • http://harrodsrentacar.com/public_html/userfiles/file/67059743979.pdfIn PDF document text
    • https://micsys.in/userfiles/file/gilipewurej.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161389be2b7c62---40593275134.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/soxupagexebimiva.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9d7ab3b62---fedubebavevefetim.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/zejomaniwodol.pdfIn PDF document text
    • https://lazdynumokykla.lt/userfiles/file/jotudofakopawizuzoxag.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_off0000bc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC74 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48B 10528 bytes
SHA-256: 25c38ca06671b3a9b1fa30c3459e61117027ca5c5bfe7a2f8cd277af825d98d7
font_02_sfnt_off0000ec8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8B 17416 bytes
SHA-256: dfe17ba9ff8b7b5a14f258fb1ae08ac2fe8261cbb137286f613bc87fe706fd48

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