Malicious PDF — malware analysis report

Static analysis result for SHA-256 592be0e1b44a108e…

MALICIOUS

PDF

68.0 KB Created: 2021-03-01 21:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6b4465203c1d80a1aeb3da2647952ce8 SHA-1: 1ff5f8ba380761ff7fff592fd09ee1f3edf914f9 SHA-256: 592be0e1b44a108ecd4a43ffa01051bbc157755d05171ac32d563066603f9e10
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/award?keyword=how+would+you+describe+a+willow+tree+nativity+set PDF link annotation
    • https://cdn.sqhk.co/rujiwujik/jJ21jaE/exodus_movie_streaming.pdfIn PDF document text
    • https://malavaxun.weebly.com/uploads/1/3/4/0/134018228/bulagolobinanabarori.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/vyyjigi/langrisser_mobile_sea_redeem_code.pdfIn PDF document text
    • https://fulodovujigiw.weebly.com/uploads/1/3/4/0/134016909/1414752.pdfIn PDF document text
    • https://wajajudamivigo.weebly.com/uploads/1/3/4/3/134359543/10d9cbce7311.pdfIn PDF document text
    • http://vurujupafowutox.mypressonline.com/vufamuja.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/bodyweight_exercises_for_biceps_and_chest.pdfIn PDF document text
    • http://netusikofigo.22web.org/simple_and_compound_interest_worksheet_7th_grade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nidomuku.rf.gd/answers_to_job_interview_questions_for_teachers.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/koxidisi.pdfIn PDF document text
    • http://bikemeno.rf.gd/dolls_house_emporium_conservatory.pdfIn PDF document text
    • http://zetulinug.rf.gd/10384926322.pdfIn PDF document text
    • http://wotalajo.epizy.com/alameda_alliance_appeal_form.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_off0000cae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE3 5288 bytes
SHA-256: 984010910937bde6198addbe60edb8f14c9d2eb163e39d661b8a0f9369c29810
font_01_sfnt_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 10852 bytes
SHA-256: cd6adaf83ca9af14e9ea8c62f6ec77fb7379c6fb98f24306facb50bdf71034ce