Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1146014d11376a…

MALICIOUS

PDF

71.9 KB Created: 2021-03-07 18:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 51548fdee2c7c77bfcd78006dcf5a1c6 SHA-1: 88aaffec26b71c685d9b44e3326d5f3cd6272314 SHA-256: 4e1146014d11376a0335ceb5398fe57fe6322bb9ec808bbffd2ffc2744341db2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://bologen.ru/award?keyword=percy+jackson+2+sea+of+monsters+official+trailer+%25282013%2529 PDF link annotation
    • https://cdn.sqhk.co/fabozesemi/hcthi1d/word_remove_link_to_table_of_contents.pdfIn PDF document text
    • https://zelekunidos.weebly.com/uploads/1/3/2/6/132682808/wezogug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408995/normal_5fcd5e7e9110e.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/Uokha5j/51718606506.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/ihgjqhc/startup_plan_wpengine.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/iiiiieo/66733149079.pdfIn PDF document text
    • https://xulomonixibeneg.weebly.com/uploads/1/3/1/4/131455416/a2a97f13868.pdfIn PDF document text
    • https://cdn.sqhk.co/kagumuzom/vdgjCid/swot_analysis_toolkit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408709/normal_5fda64794d737.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/gVDiigf/metaxifixasaw.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/konosuba_light_novel_english.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/baw9MqH/final_fantasy_7_original_ps4.pdfIn PDF document text
    • https://kikosezuzo.weebly.com/uploads/1/3/1/3/131378972/7789886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418013/normal_6042709c1faf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bowegasobufur.myartsonline.com/taranis_qx7_manual_espaol.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/aeschylus_eumenides_summary_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/zilefovadewowud.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/47255926667.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/6236205428.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/zuzaganizokepuwoketaki.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_off0000d9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E4 5916 bytes
SHA-256: aaeafcc0677e44a272ee97af525f5bd2f315c5ad00d36b75e0f1ae46c898b074
font_01_sfnt_off0000ee16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE16 10568 bytes
SHA-256: 39458e115286dcc689cff1585627349bfa7b7accc72c841a3e4fb7f5d2c60c0e

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