Malicious PDF — malware analysis report

Static analysis result for SHA-256 1314ed9726653a5b…

MALICIOUS

PDF

80.0 KB Created: 2021-09-10 11:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b4577d206855a1d4b517ba8ade12d595 SHA-1: ee1d11a27fdc0271d90f4de8158202604ef9b13d SHA-256: 1314ed9726653a5b5fa3f2bec03c133a822a30130bb7d5992188101bf1888274
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including a link farm hosted on compromised CMS upload storage. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates redirection to malicious sites, as suggested by the presence of URL patterns like 'utm_term' which are common in phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://coretry.ru/uplcv?utm_term=rdxhd+new+bollywood+movie+watch+online PDF link annotation
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161385ef75dbaa---jatebozeduk.pdfIn PDF document text
    • http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/32804119384.pdfIn PDF document text
    • http://viviapalermo.com/userfiles/files/4323516304.pdfIn PDF document text
    • https://www.libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/60368911008.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161341537340b5---90335253938.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/16632546647.pdfIn PDF document text
    • http://sushiloverca.com/uploads/files/gavamedasuxigorudewer.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/6jtr88juk2dg2s290qjiqtac07/xopemasububidigugu.pdfIn PDF document text
    • http://108shiva.com/userfiles/file/In PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161355750cdff0---wubavajoloviruzufu.pdfIn PDF document text
    • http://alhambra.kopanramen.com/uploads/files/vawonevemisiserebove.pdfIn PDF document text
    • https://southernwashpros.com/nbloom/fckuploads/file/70251133228.pdfIn PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210903_9AD70AE9CF8D8795.pdfIn PDF document text
    • https://abcoegypt.com/userfiles/files/dawakajelu.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131dc74d752a---lezutoxugesu.pdfIn PDF document text
    • http://hujiangsy.com/upload/files/70576459418.pdfIn PDF document text
    • https://ourguarantees.com/userfiles/file/nudodigoxidirej.pdfIn PDF document text
    • http://magdrywall.com/project-new/christianbook/upload_images/file/sojukuvukaruma.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/zotetowiwoxiguzitan.pdfIn PDF document text
    • https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/loziji.pdfIn PDF document text
    • https://ymy-tea.tw/upload/files/66553730034.pdfIn PDF document text
    • https://thietbivesinhsonhoa.com/webroot/img/files/74168678442.pdfIn PDF document text
    • https://marosme.ro/hirek/file/91464539444.pdfIn PDF document text
    • https://sowlindia.com/userfiles/file/kosuvudenubobisokizav.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_off0000d577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD577 17056 bytes
SHA-256: 3c5815f395080d5c98394ee4c353af4ea665ff76cdbab76d466509e64fd1e9f9
font_01_sfnt_off00010186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10186 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001199d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1199D 10920 bytes
SHA-256: e625b038de532766aa95727b3a7067c0105e3d3d323a979a9a35baafa6fdef0d

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