Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0df32e3429eb022…

MALICIOUS

PDF

70.1 KB Created: 2021-02-18 11:13:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3319c10e0b3685c3c3b666536e25452a SHA-1: d062d4e1ba1ab9aa5c37fcadbc3ea67dbcf5a5f7 SHA-256: c0df32e3429eb0227252c964b28d4a5ac5d63745b6224a8066b63f09772e9657
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a PDF link farm. One of the primary external URIs points to 'https://crophysi.ru/123?utm_term=what+is+the+best+tarot+book', suggesting a phishing or malicious redirection attempt. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or hosting malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/123?utm_term=what+is+the+best+tarot+book PDF link annotation
    • http://lefuvaguvupawax.iblogger.org/uniforme_significado_espaol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471475/normal_5fdf8fcba3df5.pdfIn PDF document text
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/677221f61d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_600d1ff0cea51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404103/normal_5ff9b4674bdec.pdfIn PDF document text
    • https://pavedivagew.weebly.com/uploads/1/3/4/4/134468388/d543fe2f8.pdfIn PDF document text
    • http://nigasheff.xyz/manual_variador_microdrive_elitec1b5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lisirowi.rf.gd/71084576993.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/sahoo_in_telugu_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/powerpoint_christian_background_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/timipu.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/ato_portal_online_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/definition_de_debit_en_informatique.pdfIn PDF document text
    • http://fubatasofofezo.rf.gd/86010908289.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/37362104184.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zagisafijewavubimeg.pdfIn PDF document text
    • http://setekavapitefe.rf.gd/76253805454.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B4 4960 bytes
SHA-256: 96f02fe53ece72ed0b57cae7d8497a62ad31cafcd531c7c0d6567d3baba3ee4c
font_01_sfnt_off0000e796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE796 10584 bytes
SHA-256: f40d11fd757a39fd8412aab71f62e4957dd101505d9cc88e6af8e00a5f7e9874

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