Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebc6dd1faf7d246…

MALICIOUS

PDF

86.2 KB Created: 2021-09-07 23:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bbfe052d24c74a38df508e3309f68432 SHA-1: a82f3d0e7eba516823038ba10d7892e4ef4ef995 SHA-256: 4ebc6dd1faf7d24698b26963ddea5f57302b5068f7675465178af240061b895e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous external links, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or redirection scheme. While no scripts were explicitly extracted, the nature of the links and the heuristic firings strongly indicate an attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://pasarant0g3l-turbo-h1t.com/contents//files/45035397802.pdf In PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b19983614---86343553794.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/rokejolined.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/e97e8656c544e51d25bca29a543e711c/99074369466.pdfIn PDF document text
    • http://pekingtogo.com/uploads/files/87359868049.pdfIn PDF document text
    • http://insfilings.com/skyzone_classic/upload/files/19660921787.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdab1d26d30---kulotoke.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/31649158770.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dca7a5897a0---41212490220.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bc87f31fd9b---29145151727.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06ad76a05a---87145658382.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe549979c5---kokaxufew.pdfIn PDF document text
    • http://lt101shop.com/userfiles/files/totiw.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/vokag.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/90541919133.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606eeebe2fd01---xaxenilolaferotexonulaw.pdfIn PDF document text
    • http://sweet-sugar.de/images/uploadedimages/file/23683427298.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/7puaflgel8e639mps049v6ge63/xarokore.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160c65bd076ba8---59203666229.pdfIn PDF document text
    • http://atomleasing.ru/media/File/duruwuxosazekesudurufef.pdfIn PDF document text
    • http://twsl.mingann.info/upload/ckfinder_temp/files/20210903205939.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/nitofoleboxi.pdfIn PDF document text
    • https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/67668099227.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=deux+mondes+a+communicative+approach+pdfPDF 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_off0000e525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE525 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3C 11108 bytes
SHA-256: d1a9b5684b464313463bdc91c0dfa901d58c2298e633ce2c2a4cb119d6847fd9
font_02_sfnt_off00011701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11701 20036 bytes
SHA-256: 02fe11e44e459280e02a1840d95cc253e4cdf48936f4b5c6231acce8cc687810

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