Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e94865cc828d7ce…

MALICIOUS

PDF

97.7 KB Created: 2021-07-02 17:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 27a3f5c2b152eb9c6ee298cb01002026 SHA-1: 0e5bd4f04dadd46df4cdde6ca3fa915d8720ee33 SHA-256: 0e94865cc828d7ce0f915235ef8a34fe9167389a8f968ce3d5a4bfa497051aac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely intended to lure users into downloading further malware or engaging in phishing activities. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://asdgolfclubtoscana.com/writable/public/userfiles/file/28914688794.pdf In PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/5ff7241300a2151c443067999a232bef/vibak.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/59223726737.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfdb84ca99---73585228373.pdfIn PDF document text
    • https://soalmatematik.com/userfiles/file/kofolevopetezi.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1608fda416338f---96723721395.pdfIn PDF document text
    • http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/37ee8cc0dabcdb341616f699175fdb21/tevesivefatofizifi.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2e1e80dbf---91460145569.pdfIn PDF document text
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/451e29c5983aab04fa2d0ab585f3f210/gifuge.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///77015169264.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16080cf8c03e78---fakurekaxuribavawubi.pdfIn PDF document text
    • http://topas.lt/userfiles/file/gudigexafajulekoxa.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/d3934a9e1b509cf969e4f7912ee45690/reroluzufagunapisixip.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b3041d2ac94---xorusopovi.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/7b134d76ccc56aaf19b31687438953b0/32845920381.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/9cad04cbb5eef21b6f957a0c4e04dae1/gigabaloduluwotetipen.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/45e683dbd4e8d369abb7ade60caf2383/guweguzibida.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/66ncqe5vcualn125iro95t67ju/19107399876.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/45414082409.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a8fd7299f---xawujazazefidukat.pdfIn PDF document text
    • http://barbusci.it/maisUserFile/file/57968202849.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/o54fi950sa2p3sn7smhqas4945/58684188965.pdfIn PDF document text
    • https://actaviaserica.org/board/file/files/ripigosobezuzigadanage.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=cranial+nerve+that+innervates+the+tonguePDF link annotation
    • 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_off00011a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13226 10584 bytes
SHA-256: 95aec9e393c67cf42f07a5017f572b119a257f77e30dbeecbd5972b880d4c3a4
font_02_sfnt_off00014a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A4B 17420 bytes
SHA-256: 8e463c2275467aa95ecbc3d50c565065153b89c07fe749c410fd8c0e3c337e1e