Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e1da916c103dfa…

MALICIOUS

PDF

85.6 KB Created: 2021-09-14 05:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e3cf4c1b5b1a647bf671aef4a231c248 SHA-1: 5f8b7339c7995ac8e5daa21f4d62e2e39eb129cd SHA-256: 04e1da916c103dfa68e16c194b17833f26461637262c0164daf9c72e5e550568
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating a malicious intent to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of many distinct hosts suggest this PDF is designed to host a large number of links, likely for phishing or distributing further malware. The embedded JavaScript is a common method for executing malicious code or initiating redirects within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://inwebjor.ru/uplcv?utm_term=samsung+s9+vs+iphone+7+plus PDF link annotation
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/49674737889.pdfIn PDF document text
    • https://kapokcmassage.com/uploads/files/202109050206484363.pdfIn PDF document text
    • https://doitoutdoorz.com/file/LWbbpwat3OlznBhA.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613e1ee040888---25103470035.pdfIn PDF document text
    • https://ijmscr.com/ckfinder/userfiles/files/46916329288.pdfIn PDF document text
    • https://mamap.in/ci/userfiles/files/59868453308.pdfIn PDF document text
    • http://leylatoprak.com/userfiles/file/ritubonewo.pdfIn PDF document text
    • http://ntep2008.com/UserFiles/File/guzeramuxajom.pdfIn PDF document text
    • http://www.brickchamber.com/ckfinder/userfiles/files/60010818199.pdfIn PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/8310558054.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613732c2532d6---99665544277.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/12627764902.pdfIn PDF document text
    • http://state-lithium.com/upload/files/nidosi.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/22545057748.pdfIn PDF document text
    • http://sergeybazarov.ru/file/12907841269.pdfIn PDF document text
    • http://toyotaprius-custom.com/js/upload/files/2222757964.pdfIn PDF document text
    • http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tebugosigawufofaju.pdfIn PDF document text
    • https://anakmeong.com/contents/files/fenulijop.pdfIn PDF document text
    • http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/40455291151.pdfIn PDF document text
    • http://promocode.lu/userfiles/files/rifuwegupoxobiwazabon.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/vuzide.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/15829041772.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16136a156a979e---vewojaliviminava.pdfIn PDF document text
    • http://coverybox.box8websites.com/ckfinder/userfiles/files/sidiletimo.pdfIn PDF document text
    • http://www.koeru.eu/failid/file/xikuzepofudajox.pdfIn PDF document text
    • http://cl-pub.com/files/files/rumiduvake.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/65071430563.pdfIn PDF document text
    • https://flomogroup.com/upload/files/kazoxemirowijosunatose.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_off0000e318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE318 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 19692 bytes
SHA-256: e8494a6f9dab42757806c68b4854f61d79a49db8bdc542962c2bb41510ae04e2
font_02_sfnt_off00012ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC0 10960 bytes
SHA-256: 1d5e6f83416f31a5e26d531ac075c97a3d9ac1a440be51bc0f3c282a35f7acf4

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