Malicious PDF — malware analysis report

Static analysis result for SHA-256 36817fdaa78bc263…

MALICIOUS

PDF

81.3 KB Created: 2021-03-19 09:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9be29bdb5dc8ab108f45c0f2e238f9fc SHA-1: 624746a7b0d4cd60889f15a46040d66fa26d6d8c SHA-256: 36817fdaa78bc26355679b2e4714516c197c30d24a249cac9513b5e06336283d
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://seumenha.ru/wix?keyword=electric+man+2+learn4good PDF link annotation
    • http://sakulog.sportsontheweb.net/what_is_the_role_of_systems_engineer_in_infosys.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/one_of_us_is_lying_movie_chase_stokes.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/83054021304.pdfIn PDF document text
    • http://rekijiwowak.scienceontheweb.net/how_to_train_your_dragon_homecoming_season_1_episode_2.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/totinilapitiruveke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476010/normal_5fd5f4c92522d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_5fe15b707c11e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5fe64de103f50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476135/normal_5fdf9d6d95e4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_602d2f9d1d6ed.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/fifuto/cadences_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/los_adjetivos_posesivos_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/gloucester_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/nobibuguto.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/34928193970.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/lanyard_template_psd_free.pdfIn PDF document text
    • http://milebulijulami.onlinewebshop.net/43978161467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a03396-119a-439e-ada4-fbbd3769ab75/49029459894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee0fd98-1f26-4058-a21b-eeb4bff0a86e/behringer_xenyx_1202fx_fx_list.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/bopagewejekogot.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/6152139148.pdfIn PDF document text
    • http://bavufupuvamopaf.atwebpages.com/32875135857.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/cricket_score_sheet_signs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4effab46-5741-431e-b865-4a838dcd714b/85144665527.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_off0000f3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C2 5044 bytes
SHA-256: f425ed964e1f5ec0784135eff26dbada4a888c61f76c9c1237a706d4c14ccdd5
font_01_sfnt_off000104c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C8 10728 bytes
SHA-256: ee777a6da66cbd201076dea32e5dcc0feb9f878bc8f8e3f0d89638e8e003d7c6
font_02_sfnt_off00012985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12985 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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