Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1679f76a263aac…

MALICIOUS

PDF

67.4 KB Created: 2021-02-27 15:13:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 81de640b222e5a0e88e6091e6a68edae SHA-1: 6809a303deb2c056502e69cfdf54e91c7c86e0e1 SHA-256: cc1679f76a263aac49643eb76e641b647fcbe869fa1afde54c507f17374129fa
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://druttle.ru/award?keyword=kenmore+gas+stove+replacement+parts PDF link annotation
    • http://rotixumuzu.22web.org/how_many_questions_are_on_the_cdl_air_brake_test_in_florida.pdfIn PDF document text
    • https://luxabilep.weebly.com/uploads/1/3/0/8/130873941/9161e.pdfIn PDF document text
    • https://cdn.sqhk.co/sifujubagis/jY4jfjc/temple_spooky_jungle_run_3d_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/giijyhc/block_puzzle_jewel_game_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/muxuzoxipopa/ghifhfV/comcast_streaming_tv_channels.pdfIn PDF document text
    • https://molulodanewiv.weebly.com/uploads/1/3/1/6/131606256/vojolulogoroferewo.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/MHz8hjW/spinach_salad_recipes_with_strawberries.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/lUicjiu/nerimudis.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/haArpjf/ice_sculpture_centerpieces_wedding.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/RejdM7a/48373426468.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/EihaPKu/descargar_app_cabify_conductor.pdfIn PDF document text
    • https://memebewaliz.weebly.com/uploads/1/3/0/7/130775997/pafamenit.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/wajufifenoxuj/2_inch_thick_plexiglass_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/decision_matrix_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/99499982560.pdfIn PDF document text
    • http://zelekisiwamab.rf.gd/jajusezedewerufilo.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/57496295290.pdfIn PDF document text
    • http://kamabutexukawiv.rf.gd/letter_a_coloring_sheets_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/xoxapotusobubapoma.pdfIn PDF document text
    • http://nufewaruxemo.epizy.com/fupavudoxonibanuxogek.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_off0000cd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6F 5280 bytes
SHA-256: 8e6eb0d06c1bcf802156b45e381a95028d09fca31e9f753a7f56007ea4b5e6ee
font_01_sfnt_off0000df60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF60 9644 bytes
SHA-256: 3ed5cb56a2e91aad63afc3433bf0edcaca7ebb51f5e9a1bfafdb116baf564510

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