Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04b1323315b726d…

MALICIOUS

PDF

85.1 KB Created: 2021-03-22 20:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c8e1114f598b1bec71e76ee3ebf1c857 SHA-1: eb47eb813a60f6e59b7b450e47c38d3bb78e30ac SHA-256: f04b1323315b726d50e6acf160320eae1d13002360f53d5572f75f0b000ac86f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. It contains an embedded URI pointing to 'https://vilenefex.ru/123?utm_term=chandni+chowk+to+china+movie+song', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded content suggest it's designed to exploit user interaction, likely through the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/123?utm_term=chandni+chowk+to+china+movie+song PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481282/normal_5fed26884a5fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480884/normal_5fff6a25b65cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475999/normal_6032e4811fa37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443823/normal_6016015789e42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419194/normal_5ffb05fea3f20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376621/normal_5feee0267756f.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/pokavib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368997/normal_601d01dd69c4b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawamunasujefu.rf.gd/27495961265.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/86032571215.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/dediwewurazef.pdfIn PDF document text
    • http://gilokokivaw.epizy.com/how_to_use_cricut_software.pdfIn PDF document text
    • http://nabunuwo.epizy.com/create_a_spreadsheet_template_in_google_docs.pdfIn PDF document text
    • http://xeroxuzowi.epizy.com/explicacin_de_las_estrofas_del_himno_nacional_de_honduras_resumidas.pdfIn PDF document text
    • http://nigugolesaxof.rf.gd/hamilton_beach_ice_cream_maker_recipes_peach.pdfIn PDF document text
    • http://xutenujute.myartsonline.com/dayton_tradesman_20_drill_press_model_3z919_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/23864788935.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/399932041.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/tegufovelatil.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/loxabiponusefoboborugeg.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
    • 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_off0000f971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF971 5344 bytes
SHA-256: c199f212b09e214a20f13ed76968be9d95e44dbe3036074b916e7dea33c85dad
font_01_sfnt_off00010b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B94 11064 bytes
SHA-256: ff13a27ecec9aa9334bcb09c3b668c8c71d1a007d97f4ddfaacff3c7c0a34daf
font_02_sfnt_off00013182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13182 16164 bytes
SHA-256: 4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349

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