Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f60a20b54b9f0b…

MALICIOUS

PDF

81.9 KB Created: 2021-09-05 14:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 48b04d70f46670cdcc8d82103ee36706 SHA-1: ffb8bcc654d09caa2eb2ccd56293e100f0d7a205 SHA-256: d5f60a20b54b9f0b0ab325d10c4b995ad38ef67bda826b9b34f9394f322860db
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised or disposable hosting sites, which is a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interaction, likely through a malicious link, to download further payloads or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://mk-sito.it/uploads/file/4059846319.pdf In PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/bbde7938363d03ef9e2de52647108f33/vuwurijabadikabeto.pdfIn PDF document text
    • http://baldonimarcostudio.eu/userfiles/files/33766910287.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/91705764284.pdfIn PDF document text
    • http://jedwines.com/cmsCart//upload/file/kunabojexe.pdfIn PDF document text
    • http://bakoca.hu/files/file/57542167993.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/07/17/jitoji.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/46998474460.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/tafeka.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/f431q7er19ngm4dp5ok210jjo5/17097916734.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/vulewuxodegekuvukovidabad.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a19cdb7cec0---49196989825.pdfIn PDF document text
    • https://tramhuonghanoi.vn/upload/files/navedegatogeninupinuxomaf.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/5825460973.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/mefexujogowiba.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/18659a648a36f202435b6d5fcd9bff5b/fezuxowewigijuditajis.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/kr6e3lmp8c2pb32cbaffh2vtng/vosojixunofakugugezavire.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/pefegitarak.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087884b463cc---72904690563.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/nutarewirixejuru.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/568b52d1254d5dae6e1bf4b7a9a482d7/kikaviwuvite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=area+mazes+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF200 18972 bytes
SHA-256: 45668e266492bbb1a1c5fe08e334653fc9d8a1572938bc7dc188ae175be87584
font_02_sfnt_off000123e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E3 10240 bytes
SHA-256: bd52b93b384364747b16232105e991068a6d96b5d2d26e750e3ef949bda5605a

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