Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee4d2fdc209039f…

MALICIOUS

PDF

78.2 KB Created: 2021-04-05 23:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: eeeffe531ce8fa0fc84fd6d9017b2172 SHA-1: f2c9d668adf5ed51ce14123b16146df5a2752f93 SHA-256: 3ee4d2fdc209039ff3a5836ef48f2ba03b114f83ce31d9d3db9cdccdab53df0c
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 suspicious domain, which is likely used to host a phishing page or download further malicious content. The document body, though heavily obfuscated, suggests a lure related to 'my eras token 2020'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=my+eras+token+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374963/normal_5fe103d1cdbcb.pdfIn PDF document text
    • http://tedewirivotu.iblogger.org/credit_report_l_g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485578/normal_603b1f63a99fd.pdfIn PDF document text
    • http://fodamibokaf.66ghz.com/cbi_officer_south_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454301/normal_6068645b13e2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_5fc67b8a63eae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417030/normal_604cc5704182a.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/gewisetug/jefazajemovugivolopegilul.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/10211409903.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/ieee_research_paper_template_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26977b0c-dd2d-4198-bef0-2777ef229304/13017197670.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/what_qualifications_do_you_need_for_a_carpenter.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/1000_details_in_landscape_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/inventory_template_with_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf1b1260-41a1-4788-a44c-465550569526/scansnap_s1500_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/sigelei_150w_tc_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/bobol_wifi_tanpa_root_di_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/adventures_of_ibn_battuta_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/how_to_fix_a_kenmore_refrigerator_handle.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_off0000e6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B6 4832 bytes
SHA-256: ca319f13cb18d8c231a05f9742d064c449c4cac7b7a5acdde3eed500e52fcf91
font_01_sfnt_off0000f72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72E 11500 bytes
SHA-256: 22f552ff1ac2d2202f9f9241d48b6509f1c61588923ff3c6ce4fab719e9a07fa
font_02_sfnt_off00011e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E00 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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