Malicious PDF — malware analysis report

Static analysis result for SHA-256 52964f443e1bbeae…

MALICIOUS

PDF

68.8 KB Created: 2021-02-06 22:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d89726978040685c553e7c6cca424421 SHA-1: cd445565fc34de2a559052fb56cebfb152dcc079 SHA-256: 52964f443e1bbeae4664e68fbea7f34688b95042aa741c3a736b6a7340731318
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content, possibly exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/aws?utm_term=crt+television+repair+guide PDF link annotation
    • https://cdn.sqhk.co/wirowanorax/dC4aQgf/92426947139.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/gicOih4/space_simulator_free.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/JMGhcoi/98785263498.pdfIn PDF document text
    • https://cdn.sqhk.co/semegopo/jeT35zq/runaway_christmas_bride_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/T7aCuyu/skirball_fire_today.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/igOhfq9/15844911666.pdfIn PDF document text
    • http://vostokzapad.su/10149542442pe5mj.pdfIn PDF document text
    • http://winoorama.fun/pureflix_on_rokubfc8l.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/jcCgiid/sunexakixuxanizos.pdfIn PDF document text
    • https://cdn.sqhk.co/moturira/iEdjdRX/tyrant_unleashed_wiki.pdfIn PDF document text
    • http://morj.space/nozarusejexafomesajolukedm1feu.pdfIn PDF document text
    • https://cdn.sqhk.co/xumirikebixo/hfjgnic/titonavugekurof.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_off0000ce74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE74 5092 bytes
SHA-256: d7f757fdd13b4115288c6d8331ef5d30feb0a0ccf8879e87333676dd7324c309
font_01_sfnt_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 10880 bytes
SHA-256: a44b54b2dbefd5e2014c314728e61b7743b94a7ce937840fe7c64f48ba6d6d61