Malicious PDF — malware analysis report

Static analysis result for SHA-256 1660ace30a46121e…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 15:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 48e45da10e5ff1e59694f5ef2be8b6e9 SHA-1: 2070193bd81b939d9b494ba92cf1a099400890cc SHA-256: 1660ace30a46121ec0eb2a29f910a3fada92b07d35b08a29fc3d345757131ebb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/award?keyword=model+3+price+history PDF link annotation
    • https://cdn.sqhk.co/givogaduta/bhfMhid/zutikawibosaj.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/jgqhcgT/22899059660.pdfIn PDF document text
    • https://rawoxoduzipuk.weebly.com/uploads/1/3/2/3/132302868/bosuve.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/beethoven_piano_sonata_no_17_in_d_minor_op_31_no_2.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/cgdUyjh/stickers_for_whatsapp_android_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/8le2a6x/how_to_change_background_color_in_photoshop_mix.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/igteiil/tapread_novels_and_comics.pdfIn PDF document text
    • http://paktum.pro/dms_guide_5ehhw0y.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/phoenix_rc_flight_simulator_for_mac_os_x6j6k3.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/hejcE67/lobbyist_groups_in_alberta.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/health_psychology_biopsychosocial_interactions_9th_edition_citation.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/dvjhIRT/lufero.pdfIn PDF document text
    • https://roxomikanu.weebly.com/uploads/1/3/0/8/130873860/408471.pdfIn PDF document text
    • https://cdn.sqhk.co/wukatigubo/iejigi9/ligovapapuke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepofif.onlinewebshop.net/ejemplo_de_un_guion_teatral_muy_corto_para_nios.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/python_is_object_oriented_means.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_off0000dee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE3 5220 bytes
SHA-256: 4e8a8ce80da0b2fb3c1ae59ffcddb76298c629acf84fb73e6ac955c69cc02e28
font_01_sfnt_off0000f0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BC 11032 bytes
SHA-256: d64e6d81ba19dc8df120f9ceb99336f027a5f1c77cfb0c8c04ba87ced29e2768