Malicious PDF — malware analysis report

Static analysis result for SHA-256 402e1b47863675cd…

MALICIOUS

PDF

87.1 KB Created: 2021-07-18 02:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 096bbc81fef3d1fd9c1cb015a7f65dcb SHA-1: c53d576b39395efe46658fed2a5cfbc33e997891 SHA-256: 402e1b47863675cd61f6f1c01d1e248e65a387be99938e8e21b97784af01c34a
156 Risk Score

Malware Insights

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

This PDF was flagged as malicious by both ML classifiers and ClamAV. It contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/868dd4af9b0702f6b055909488b1b163/jebiruboverabaritupedek.pdf In PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b62b5439a52---3658119949.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/3f1c1b999782d66d1841436c9c796f5e/72272947915.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/1b191107026c44929f4026e7636fe7c2/tiwodamokitorutox.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c46e4c0c8a---16496639656.pdfIn PDF document text
    • https://mszukam.pl/dat//file/dalotavubuzowugilenazesed.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d2df821a2---54471616733.pdfIn PDF document text
    • http://cortabellanews.com/userimages/nevevugejujup.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/17664926491.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5bd1ab682---vejedapisoronagemu.pdfIn PDF document text
    • https://wildarium.com/ckfinder/userfiles/files/41883235933.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d614b66540d40e17f030ea11003d94aa/25914622848.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/81873246215.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/12c2a79cf9715cc433998a12a6d30c0e/javugotagatarunilubunuro.pdfIn PDF document text
    • https://ceral.pl/ceral/pliki/file/80117340812.pdfIn PDF document text
    • https://btegypt.com/file/38737241738.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608945e747971---gekanuxofiwesano.pdfIn PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/99684718799.pdfIn PDF document text
    • http://abnicum.com/files/file/59567051557.pdfIn PDF document text
    • http://erex.hu/upload/file/zinomosafefoj.pdfIn PDF document text
    • http://agro-partner.com/Image/files/21285132802.pdfIn PDF document text
    • https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/fisorumusitebinetuboji.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/c85l282gj853hli2t0930fu47l/bodofa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=after+we+collided+the+full+moviePDF 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_off0000f2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C4 16940 bytes
SHA-256: ae139ed6650cf38e00db583a40f571aa4e6a8108a4d0986a6ade1c1cad9dea82
font_01_sfnt_off00011ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC6 10540 bytes
SHA-256: a541c84043d912ecd8b9e47d78e6d83174f63605331011649613499f8d715661
font_02_sfnt_off000136da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1