Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02fe1ad20998e6a…

MALICIOUS

PDF

74.9 KB Created: 2021-09-29 01:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 9a8af19e874989ae033856c09d73c8c8 SHA-1: c0268cfca455d05e30a2ff1a8a44426dfaa981be SHA-256: d02fe1ad20998e6a98f856dbe8a23ab61388221f0a3666c0038b3ce5e0f1336c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 https://crysiq.ru/uplcv?utm_term=pes+2011+mod+2018 PDF link annotation
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143933f47dab---56539046869.pdfIn PDF document text
    • http://orosweb.hu/userfiles/file/61253205729.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148ca3e3410f---mifixotebetezoz.pdfIn PDF document text
    • http://belly.bpv.su/content/files/files/xemonak.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/89039247659.pdfIn PDF document text
    • https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16147f6a910bfc---luranelarorirojusa.pdfIn PDF document text
    • https://interstudy.net/userfiles/file/bifofigolegosinosunu.pdfIn PDF document text
    • http://www.gpkoaee.ru/ckfinder/userfiles/files/8086352061.pdfIn PDF document text
    • https://bselink.com/userfiles/file/96538411804.pdfIn PDF document text
    • http://caycanhtuyhien.com/uploads/image/files/2835167551.pdfIn PDF document text
    • http://kystar.net/filespath/files/20210916235346.pdfIn PDF document text
    • http://savaksangida.com/resimler/files/51464942024.pdfIn PDF document text
    • https://butterfly-propertymanagement.com/userfiles/file/14291499453.pdfIn PDF document text
    • https://grandiosieventinuziali.it/filesUploads/file/32849815960.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/kewanulo.pdfIn PDF document text
    • https://oceanflowerhotel.com/uploads/image/files/14468009373.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/jokosofewakitatiteka.pdfIn PDF document text
    • http://giaphatmed.com/upload/file/nozipure.pdfIn PDF document text
    • http://cesnek-vysocina.cz/UserFiles/File/3729206910.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/matino.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147862e9ab01---83684157907.pdfIn PDF document text
    • http://solarissoft.com/img/userfiles/files/filivifejun.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/1165135397.pdfIn PDF document text
    • http://abwcolley.com/uploads/files/lajunijorowoxunomusani.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_off0000bb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB3E 19556 bytes
SHA-256: 594af0f8a9b41550682905505eccef9bac46ceffe63c776770c3b634e78198ca
font_01_sfnt_off0000eea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000106c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C0 10312 bytes
SHA-256: 0878575e6b43190459763c3d8e2efdbc742d5c66f7e52bda68eea8e73d0bd910

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