Malicious PDF — malware analysis report

Static analysis result for SHA-256 024fde5ccd6567fc…

MALICIOUS

PDF

72.3 KB Created: 2021-06-15 12:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: bb4dd96f43f6514f0a7ec652cbbb0d03 SHA-1: a95f28b4629358a1a1c25c5e6af551a970375f85 SHA-256: 024fde5ccd6567fc0b3ef55d143615e762d2233f8fa6c4e0de2c32df3cafbb2e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various compromised WordPress sites and other domains under the guise of a song download. The embedded URLs are designed to lead users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://huntic.ru/uplcv?utm_term=telugu+private+dj+songs+2019+download PDF link annotation
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8633735f76---wabilevagipijezubejilunil.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/e34d7db8dfa2d878aae36a79b9144719/wobemozokewopisenuligub.pdfIn PDF document text
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/fulavo.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/68010092872.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160837db9a3ca6---44895973614.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c883dee440---8964845593.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/07cf036c89474749ec793653cd1a930f/51600006098.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940a61543b9---66150295688.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/ffe9ae83f461f3e6372c87989086c896/39236888987.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/15419947379.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/tepuredowuzugejolajevuto.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d022344f07---torupipukifojodi.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/vabomitowirot.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/prhqde3nbu56qgm301uqnkfj73/puzigepa.pdfIn PDF document text
    • http://taiwan-casters.com/userfiles/file/24124186981.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/lenufepegipupowobod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 5788 bytes
SHA-256: 05ff0d137c6ad8bb1dc71aaddcf5fa235f8fe9c896c97ca1c5ce731de835a4fd
font_01_sfnt_off0000ef31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF31 10728 bytes
SHA-256: 68bf67de52c3fb27817a4211bfa71a183f05c7457f2d5877ef83c0c9b28f694e