Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b73e739bac84b0f…

MALICIOUS

PDF

72.5 KB Created: 2021-02-17 00:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8124c78d7038d3a77b82e38f939f8f45 SHA-1: 8060b488e3acafb074c239d8e4207b06c429e643 SHA-256: 4b73e739bac84b0f20c03e197147b233f9c0373f60b93a768a0b85682801f651
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://druttle.ru/wix?keyword=c9+cool+white+led+christmas+lights PDF link annotation
    • https://bobidowi.weebly.com/uploads/1/3/2/7/132740787/2663636.pdfIn PDF document text
    • https://fezowekufeda.weebly.com/uploads/1/3/3/9/133999429/puripomem.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/hjehhie/walmart_delivery_homefree.pdfIn PDF document text
    • http://manybigs.space/45890507626759x0.pdfIn PDF document text
    • http://bottlechainworld.com/half_life_calculations_worksheet_instructional_fairge2gv.pdfIn PDF document text
    • http://damvglaz1.xyz/twilight_struggle_turn_zero_and_promo_packs2m51g.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/L7sYgfT/rarabovotepogipitavalu.pdfIn PDF document text
    • http://gusimaziwagax.22web.org/sudisenuratezasa.pdfIn PDF document text
    • http://navalny.design/zekozagw69t.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/hWhjEQb/egg_wars_download.pdfIn PDF document text
    • http://miiliioner.xyz/lokonodudozudomisenigun40ox.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/7762173.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/dihUPbP/rikajadetaditokexadobubit.pdfIn PDF document text
    • http://fastdonwload.space/the_unending_game_freejl2zi.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/9ff2a5.pdfIn PDF document text
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/6364496.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fazomexaboru.rf.gd/advanced_custom_field_plugin.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/google_chrome_android_2._3_apk_mirror.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_off0000df58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF58 5508 bytes
SHA-256: 11ff8b3a0ae891070efbe261bee897458a3fa07732747cf5c886889d405aa551
font_01_sfnt_off0000f1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 10260 bytes
SHA-256: ec3315a036d053cf70ddb4c44b705dc0b60a5eec16a7fe343b23fd622ff73805