Malicious PDF — malware analysis report

Static analysis result for SHA-256 046ed109d57b783a…

MALICIOUS

PDF

74.8 KB Created: 2021-03-21 11:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 68803d6557fb423120108ae9d0f88e84 SHA-1: a708a821611df883089b1b16f8b10edf553d80f1 SHA-256: 046ed109d57b783a566c292e62f06acbc8696011f609ee085573e518438421a8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that, if visited, could lead to the download of further malicious content, disguised as a software guide. No scripts were extracted, but the presence of an external URI suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/wix?keyword=autocad+2016+user+guide+pdf+free+download PDF link annotation
    • http://palikexifumalam.mywebcommunity.org/zafewik.pdfIn PDF document text
    • http://bettermoneytips.com/how_to_be_a_kindergarten_teacher_in_georgia9aqxl.pdfIn PDF document text
    • http://my-favshoph.online/jekodekitulorvrun8.pdfIn PDF document text
    • http://unityfree.xyz/free_slots_online_igtvicgx.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/90232720212.pdfIn PDF document text
    • http://bafakuvim.sportsontheweb.net/gesilerivexosirawopadave.pdfIn PDF document text
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/1599750.pdfIn PDF document text
    • http://nubolats.xyz/libab6pgd9.pdfIn PDF document text
    • https://gewuvakir.weebly.com/uploads/1/3/4/6/134660990/fenuza-wudatoturovun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/defujo/baidu_antivirus_2015_free.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/brooks_brothers_shoe_size_guide.pdfIn PDF document text
    • http://zevusup.atwebpages.com/patowadamisawukat.pdfIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_fff3fd784c95423e8c1b1b0a19576d41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/13633591304.pdfIn PDF document text
    • http://japamitafixe.myartsonline.com/aydn_trk_ateizmi_anlamak.pdfIn PDF document text
    • https://a0f1d9c0-ea46-4e0e-9383-d87711d3127f.filesusr.com/ugd/1e3fb7_aaf6fd9ca7e448089b58dee145eb5b8b.pdf?index=trueIn PDF document text
    • http://zilowovuv.atwebpages.com/5384636019.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/cours_leons_d_anglais_pour_dbutants.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57A 5884 bytes
SHA-256: 450769d857f286f9e1a9ae09f4750859727a10ae138ca055db8a6f5020f45579
font_01_sfnt_off0000f9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AA 10784 bytes
SHA-256: 5be3967a3d6ad0f75ff11132052ab66d439c01aa51d5128e8f57b9b5fbbfb148

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