Malicious PDF — malware analysis report

Static analysis result for SHA-256 e413e117c9d46396…

MALICIOUS

PDF

71.6 KB Created: 2021-09-21 00:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: c7b02132ff4c64cba595ed60cd06d16a SHA-1: 286ccf99b7fe13a9bb06e1e5ac56b18402118da9 SHA-256: e413e117c9d46396a3f9f1784a17680219b72aa80c0b37fd7edd09b93d618e7b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to external websites, some of which are hosted on compromised WordPress sites or disposable domains. The presence of these links suggests the document is designed to lure users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 https://garglob.ru/uplcv?utm_term=anu+and+arjun+tamil+movie PDF link annotation
    • https://ceccargiurgiu.ro/userfiles/file/rujajadeturiganolalu.pdfIn PDF document text
    • http://skinct.com/upload_file/file/Fl202109092050534221.pdfIn PDF document text
    • http://ore-processing.ru/d/files/mitedosarolenavositaxo.pdfIn PDF document text
    • https://hamzakocakoglu.com/userfiles/file/58483742454.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a17951f634944951ec1e658c23f618aa/sotafa.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/0e15210991472aa1b242dce5220895cf/bodilekabusutu.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16140efff1f16b---wolatub.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/98705741885.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161412ea2adb68---lunenilu.pdfIn PDF document text
    • https://tselectromechanical.com/uploads/CKfiles/files/89110465815.pdfIn PDF document text
    • http://chochosanencino.com/uploads/files/85051533210.pdfIn PDF document text
    • https://dammesliepas.lv/ckfinder/userfiles/files/88164269440.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/88099562218.pdfIn PDF document text
    • http://denprokhorov.ru/images/file/gelibugazeziritamajulewin.pdfIn PDF document text
    • http://chretkinia.pl/userfiles/file/baxezujefujofisukutisi.pdfIn PDF document text
    • https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/1118607510.pdfIn PDF document text
    • http://kaitianjinghua.cn/admin/userfiles/file/202109060828024639.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/0a6ca244b2035784908bcb0ef8990cff/76787946972.pdfIn PDF document text
    • http://owop.challengersports.com/ckfinder/userfiles/files/gebixekerikodebarenalazid.pdfIn PDF document text
    • http://ancient-theater.gr/media/file/ninadunafazalomis.pdfIn PDF document text
    • http://avtrak.ru/ckfinder/userfiles/files/jiganotofugine.pdfIn PDF document text
    • http://codienlanhminhquang.com/upload/files/fazutaku.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_off0000b5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5E2 10520 bytes
SHA-256: a88d6c069856bf903dc8a58977697e4557f802456fa93e16c9955ea536d9c1f3
font_01_sfnt_off0000cdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC1 16688 bytes
SHA-256: 84abf99aa2073fa81deda4e1af90cc7598059cee318208379cb88d063f4c50a6
font_02_sfnt_off0000f8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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