Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7dceaeb186de79…

MALICIOUS

PDF

88.5 KB Created: 2021-02-27 20:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6b6e714c1b417251e0dd44212007b93f SHA-1: acb15a1cc1d749a220384e05662fd5388a5daced SHA-256: db7dceaeb186de799c4192dd0a694fb254342888c3836aa0fffef3539d2433aa
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs pointing to suspicious domains, suggesting it's designed to redirect users to potentially harmful content or download further payloads. The PDF structure and embedded URLs are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=is+data+science+better+than+software+engineering PDF link annotation
    • http://eglo.club/91497273173vwwaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384832/normal_5fe100c8b8d21.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/zixogizetiseke.pdfIn PDF document text
    • http://psychologyrelax.xyz/467342454840uzoe.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/time_word_problems_year_4_worksheetsiigde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393033/normal_60348d7310da2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fcf19dc63c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474170/normal_60216b438f47c.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/intel_dx58so_bios_beep_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_600e8fddcfb60.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/how_to_use_cricut_personal_cutter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414353/normal_602c9ebacc187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473062/normal_5fd278b456f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415070/normal_602d48d82c005.pdfIn PDF document text
    • http://remont-kholodilnikov.website/lajoxaxogibiba2zj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/pe_lesson_plan_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/bin_nh_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/emoji_quiz_bored_button_answers_level_3.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/chaalbaaz_1989_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/lasimegupelufu.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_off00011b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B29 5420 bytes
SHA-256: 0a090ff42347a9ec0aeeb7b8efe56b54657f3173b640ac66dcc531cdb40fcfde
font_01_sfnt_off00012daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAA 11328 bytes
SHA-256: 08ebf4bc2d032cc65f27f6eaac898a276a525c855215b9b7dab661e917c796b1

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