Malicious PDF — malware analysis report

Static analysis result for SHA-256 46bf5342888bd7cd…

MALICIOUS

PDF

83.7 KB Created: 2021-02-16 03:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8cd6a72b5e15bab49f67d9dac2a11110 SHA-1: e1897695bea6b460e0b6785d61f843d2242242df SHA-256: 46bf5342888bd7cd55615da942f9231c50a1a81e8dd39f7aa34af50ee44f68b2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result for 'gm diet plan results and reviews', suggesting a social engineering lure. No scripts were extracted, but the presence of an external URI and the malware detection indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=gm%20diet%20plan%20results%20and%20reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450347/normal_601c8cf0801be.pdfIn PDF document text
    • http://tufepuwaw.iblogger.org/48779068895.pdfIn PDF document text
    • http://zaxunux.iblogger.org/81657478649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_6012db5cc7d7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467927/normal_5fced34e17148.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/bangalore_cdp_2015_map.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/arjuna_arjuna_song.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/wazim.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/jogos_de_carros_para_pc_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/company_store_split_king_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/41517844504.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/86762263682.pdfIn PDF document text
    • http://viwivebobip.epizy.com/sewotufuf.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/tagdi_song_dance_video_mp4.pdfIn PDF document text
    • http://wuwinot.rf.gd/michelin_guide_japan_tokyo.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/tafuleruzafovukixibet.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/outlook_for_mac_10._13._6.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/bobipaxudonad.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/tutor2u_opportunity_cost_worksheet.pdfIn PDF document text
    • http://zanawolusebil.epizy.com/14001711239.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE75 5060 bytes
SHA-256: 4a3fd722677391793fe0b8f273feb39e9a730c6c96238a0914a9af2694e2687f
font_01_sfnt_off00010f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9C 10456 bytes
SHA-256: f1fe1b36f1ee21ce68f2b8bba90fe424172b9ecd438f7982216421980ed50d0e
font_02_sfnt_off00013367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13367 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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