Malicious PDF — malware analysis report

Static analysis result for SHA-256 c243ed211ecff06a…

MALICIOUS

PDF

73.1 KB Created: 2021-02-20 08:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b6acb7a73a1359f26074c009d89a463 SHA-1: 0cc51eec2ca7ef44eac8f0c0c82fdfd84b429db9 SHA-256: c243ed211ecff06af50f38a355834b5ae13cb607ed94649b0be20a08ff429847
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=best+sift+study+guide PDF link annotation
    • http://testersairf.xyz/university_of_toronto_essay_format96cdd.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/d0gjnhi/english_dictionary_offline_free_download_for_windows_7.pdfIn PDF document text
    • http://hookup157.online/english_grammar_practice_worksheets0d72v.pdfIn PDF document text
    • https://cdn.sqhk.co/gufuluzibos/frXmsNl/best_small_business_franchise_to_buy.pdfIn PDF document text
    • http://tronreserve.online/94056977858r5bgc.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/gIo3jj7/tor_browser_apple_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/khihbeW/banana_shake_recipe_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/bjbZArs/bibijokabumuzumutijegi.pdfIn PDF document text
    • http://cleanup-sale.site/land_rover_defender_2020_accessories_price2crri.pdfIn PDF document text
    • https://cdn.sqhk.co/bebubofawa/ghicClH/evo_pop_apple.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487623/normal_602ad9e5d8b88.pdfIn PDF document text
    • https://dujapiloxi.weebly.com/uploads/1/3/1/8/131857305/4131414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408324/normal_5fd336fe486b5.pdfIn PDF document text
    • https://rubajamepufukav.weebly.com/uploads/1/3/4/4/134432722/narududuwididow.pdfIn PDF document text
    • http://robertferrell.net/blue_coat_sixth_form_coventry2gifl.pdfIn PDF document text
    • http://mihetos.xyz/design_process_in_architecture_from_concept_to_completion53gal.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/R3gfEgc/20890038309.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A3 4888 bytes
SHA-256: dae55a0a8574e90ba7df65e11ed850c0b6fea3a8cf7ce73129e7f9c7d06488b5
font_01_sfnt_off0000f26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26E 10760 bytes
SHA-256: 5fe590952903088ac8161566f3f23042eb083e451c33d8d8261f3de013527fc0

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