Malicious PDF — malware analysis report

Static analysis result for SHA-256 08322169ce71bda0…

MALICIOUS

PDF

80.4 KB Created: 2021-02-11 23:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e6db036c83487161c219f1baf81a6409 SHA-1: 07562df146a53562b86e38b4b5095506975bbc32 SHA-256: 08322169ce71bda0f2aa21633c5c89bc93766c496486096478b0162eead81f53
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains a search query for a book title, which is likely a lure to disguise the malicious nature of the file. An external URI pointing to 'bologen.ru' was extracted, suggesting a potential command and control or download server.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wb?keyword=bajind%20marathi%20kadambari%20pdf%20free PDF link annotation
    • https://cdn.sqhk.co/nedivixozu/fWZSheA/wivaniwozuwav.pdfIn PDF document text
    • http://fuwefepor.iblogger.org/20171303754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_5fef566c6d565.pdfIn PDF document text
    • http://najitop.22web.org/birizasovezig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366652/normal_5fe427460eff4.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/icJgcxg/fate_of_racing_furious_8_full_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454982/normal_5fcd6e486a43b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466166/normal_5feaec56375aa.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/10hajaB/russian_cake_decorating_tips_flowers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://figifikasiwaw.epizy.com/writing_chemical_equations_worksheet_1.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/tunovi.pdfIn PDF document text
    • http://vedaremix.epizy.com/disoxopulovorowupaxil.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/28470961984.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/word_scramble_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/android_version_for_s7_edge.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/english_guide_6th_class.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/second_conditional_exercises_multiple_choice.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/game_dev_tycoon_apk_mod_unlimited_money.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF5 5400 bytes
SHA-256: 22218ea857d79e5c63ff0590e27153c8c3f481516b3744df1ebeb1e84914010f
font_01_sfnt_off0000ef22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF22 2948 bytes
SHA-256: 9f2787e4592a9e1efa9a1ee57fa3cedda2d17752e08c6045ee9e8e0617e4c469
font_02_sfnt_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 10752 bytes
SHA-256: 859ba9fcbd787f8370594a4535b8073fa0f02580ec2225d5f4e17b3598ac99b5
font_03_sfnt_off00012062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12062 4600 bytes
SHA-256: b7a16152fa671b4c69bda1cc41e8692bc9bc4080473fb7fd6494a81d7906f01d

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