Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1832e908911a17…

MALICIOUS

PDF

87.1 KB Created: 2021-07-08 12:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ecfae007047085733081810b2fb2ca75 SHA-1: 2fb52fdb3236b257ef5c4e5f36b14f8bfbda9631 SHA-256: 1e1832e908911a172cd2ccb0a6f04842f45b9795e69693c631a02b03690f1d0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many hosted on compromised CMS platforms or disposable domains, directing users to download files. The primary lure appears to be disguised download opportunities for popular software, such as 'download devil may cry mobile'. No scripts were extracted, but the presence of multiple external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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=download+devil+may+cry+mobile PDF link annotation
    • http://ahsaipu.com/v15/Upload/file/2021430648267319.pdfIn PDF document text
    • https://aykutemlak.com/upload/ckfinder/files/79980701700.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/31a21f7143c84f4f17797d6bf2a1f7e8/suvifinivudufapitalazutig.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a8798f9d2ca---18782033137.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/25740319316.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160afc2ee436f2---13578761430.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/8544f65a7f6bd03963146b2f6950d977/tolopekol.pdfIn PDF document text
    • http://luxmeterthai.com/ckfinder/userfiles/files/81958253091.pdfIn PDF document text
    • http://burelomdo.com/ckfinder/userfiles/files/21163254207.pdfIn PDF document text
    • http://sun-eko.eu/files/file/vuvefubupeveromo.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3c7be213f---dixerikebajofanakafunuvin.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/7bb73e3d501876c9fd56ecf993696f8d/zemigijawujapurodorukur.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608736ec68c44---57875222146.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/c1651df1cbc877eba5c0d3606aabb62d/70722357635.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/b089c98a45a1b422e3569571bdc0f65d/bofewebeligowisa.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/hvv5kn8noluaojjnrhafoe8j2o/pilaxonawefevugasixiles.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b6f9685eb---40507814935.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/2571ccbf12916d922d009c9b54f24464/kelurodagozajubepokepukas.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/74652678565.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c77553e4a8---84718959257.pdfIn PDF document text
    • http://project-st.ru/userfiles/file/siferaroku.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/xudobobonawitiv.pdfIn PDF document text
    • http://j1medical.com/uploaded/file/35031333742.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/ffa7fa814bc158a8e15442c215f7442c/jozapinenavukisolizi.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/66775147a781ad49d80c4e530af8f9ab/vatitebiduli.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089955be4a9d---webapokomoganitiga.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_off0000e5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E1 10672 bytes
SHA-256: 327e678e06dd1f71a23a3009e0eeb174d9c7c124c20a219002669e852a6e4639
font_01_sfnt_off0000fe4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4A 22276 bytes
SHA-256: ec60e8cf2783102a14558b8d51104a9f037c29f974012b671d3778975d92bdb8
font_02_sfnt_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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