Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ca67d5596c3934…

MALICIOUS

PDF

67.1 KB Created: 2021-02-26 14:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 56065fa70527a6ff7e856150d001714f SHA-1: 292e7ccba4a781101765136f2863b866165c9c9c SHA-256: b8ca67d5596c39345d6bbe40b757dbdd05533e0331149539b354bf0c49dba1ff
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://kuzutuzo.ru/award?keyword=largest+ranger+boat+dealer+in+georgia PDF link annotation
    • https://cdn.sqhk.co/jigekuragige/qihhco7/kebadebe.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/how_to_use_a_marathon_wr50m_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluwumenad/PheNjhd/82738968122.pdfIn PDF document text
    • https://bamopinusomuna.weebly.com/uploads/1/3/1/3/131379567/13bdc8.pdfIn PDF document text
    • https://cdn.sqhk.co/dafagupovo/chj8ibH/morph_mod_for_mcpe_1._16.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/white_space_graphic_design_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/ejaOEjd/lab_dog_puppy_images_hd.pdfIn PDF document text
    • http://zulurasovuguloz.66ghz.com/network_tools_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/idibLo2/tevumerogagu.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/3jOjbIZ/dufijubemid.pdfIn PDF document text
    • https://linajijokib.weebly.com/uploads/1/3/4/0/134000065/lezalumaf-kigubawukop.pdfIn PDF document text
    • https://muxazufi.weebly.com/uploads/1/3/2/6/132683336/77cd7124cd33a.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/jifesu/ite_version_6._0_checkpoint_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/93524851709.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/33883767753.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/aust_admission_circular_2019-_20.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/sezavebovelisesufekaxi.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_off0000cb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB37 5072 bytes
SHA-256: 1900a2238ad71ece8a91bf4b23af939085b2119a460c2462f8be8ee31bf20eb6
font_01_sfnt_off0000dc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC80 10188 bytes
SHA-256: ab4762bf10abe61a4b274191e31ccd05b71ad232e5dae75a6ab7fdf17f49f4cc