Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e4f22205974d58…

MALICIOUS

PDF

79.5 KB Created: 2021-04-05 00:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4542d88bc64284314bb8844dd32ae7cb SHA-1: 486d5b9302bc3c0453517598d10e4c01deb67986 SHA-256: 82e4f22205974d587ef69f2c8f9246cc949fbe9fb1ffaf8a51360e3097a1b668
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'dugedepap.ru', which is likely the malicious destination. The document body, though heavily obfuscated, contains text related to 'Hisense 40 inch tv legs' and the authoring application, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/aws?utm_term=hisense+40+inch+tv+legs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460230/normal_60036c13c15af.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/jighZwn/barrett_jackson_2020_dates_and_locations.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/dTGfahf/free_full_length_comedy_movies_on_youtube.pdfIn PDF document text
    • http://rijigikesezaga.mypressonline.com/biodata_form_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/Pjb2xjc/39904193556.pdfIn PDF document text
    • http://kalukawuwo.mygamesonline.org/presentation_analysis_and_interpretation_of_data_in_research.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374685/normal_5ff9bffd3a284.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392661/normal_5fe599cd4f7eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_601a7224a48f3.pdfIn PDF document text
    • http://menesoger.iblogger.org/windows_cmd_list_files_matching_pattern.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_b95f8119e1b440cd840e62d1c2e2ade8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/tukupotidawunexotenasi.pdfIn PDF document text
    • https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_227b37d94c5243b8aa57b7653860bc23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kukazowox/73138598881.pdfIn PDF document text
    • https://88966db1-4a83-4446-b941-f65022a6235f.filesusr.com/ugd/928e0f_5d35afcae8e64178abc3e5ae9eb080ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotenu/10533225767.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/91523387428.pdfIn PDF document text
    • https://86cafecd-0af7-43e6-b578-14605c742a6c.filesusr.com/ugd/c4ddd0_7ba770817cc44397bb1dfe7dc0f370a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/5998323533.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/they_answer_me_in_spanish.pdfIn PDF document text
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_9821eb8edce94fd6951fdbcb39bbfdac.pdf?index=trueIn PDF document text
    • http://zotoputoxo.rf.gd/bestiario_argent_ita.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_off0000f946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF946 5008 bytes
SHA-256: 68c8682197021447e5da256e7eabc89e7f4eb938558459c295c98a87f53b2d8e
font_01_sfnt_off00010a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A63 11192 bytes
SHA-256: 18cc80b403de84357662f86c99f30b3be5437f07e21bdeb9b786aeae10952400

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