Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c1ddd6fe23a6f9…

MALICIOUS

PDF

64.9 KB Created: 2021-02-14 05:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e17fb9c832618fa8e5293c948b233c7c SHA-1: 26d84c6a85b21b5583a46e5e20348ec5a104a444 SHA-256: 21c1ddd6fe23a6f9eba637952fe10a4e2c00a6f40ca86024287538ddb1fd0d47
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=bill+nye+chemical+reactions+video+worksheet+answers+pdf PDF link annotation
    • https://sefokuto.weebly.com/uploads/1/3/0/7/130738721/gunut_zikoku_fepuxatosot_masizokivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485299/normal_6019108b8a64a.pdfIn PDF document text
    • http://wbigs.space/jepevimefajomoxm53bt.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/XBTgc2i/classic_table_tennis_blades_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/5Egfgdr/alchemy_symbols_planets.pdfIn PDF document text
    • http://mishabelle.ru/dark_web_image_searchy4vht.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/4hcihwy/oklahoma_football_recruiting.pdfIn PDF document text
    • http://table-wait.com/rigofimugitudapabuveduxat7htmt.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/l4gd1G6/sunrise_alarm_clock_amazon_uk.pdfIn PDF document text
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/paberiwu.pdfIn PDF document text
    • https://sowurudiz.weebly.com/uploads/1/3/1/4/131438308/fodolofulukezojo.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/zewimu/strongly_disapprove_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/brown_wave_background_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/tencent_gaming_buddy_pubg_beta_version.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/pdf_to_excel_converter_free_software.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/22292692873.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/3715600912.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_off0000c068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC068 5764 bytes
SHA-256: d0af26fad6eec9efb66ea1fbdedd6190daaea393d452f887d5b7be13d0fcb84d
font_01_sfnt_off0000d3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F4 10140 bytes
SHA-256: 43ca92acedecc0d71b83b7b894827c94398278ae7e28b769c350d33e8f4bf23d