Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57b3ba5002fe6b5…

MALICIOUS

PDF

73.2 KB Created: 2021-03-02 16:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2a3fd2e5ee34e0005d8c0413b1f946ae SHA-1: 9c1f881b25f6d5b12f03005f3effd3d39595807c SHA-256: d57b3ba5002fe6b5513a6dd35f866bc9f54cfaaf0d57ac1b723ba365a6668caf
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=are+health+o+meter+scales+accurate PDF link annotation
    • https://togijiwasifuva.weebly.com/uploads/1/3/1/3/131398416/fupiril.pdfIn PDF document text
    • https://cdn.sqhk.co/repoxovu/0jhj6UN/lenazefoso.pdfIn PDF document text
    • https://cdn.sqhk.co/rokijatu/irkVcLe/paul_hardcastle_jazzmasters_albums.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/Pbjfhfv/rechargeable_fan_lowest_price.pdfIn PDF document text
    • http://rusewigojubilon.mygamesonline.org/variburar.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/f543b82ac733e30.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/gdiePPq/unicorn_poop_shooter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496816/normal_6002109d99803.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/ezjihcL/carlcare_app_apk_download.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/hp_officejet_pro_8610_printhead_cleaning_kit.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/how_to_change_my_verizon_jetpack_password.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/fofeguj/24401422703.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/waterfall_chart_excel_template_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/zelda_majora_s_mask_3d_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/jack_reacher_never_go_back_2016_tamil_dubbed.pdfIn PDF document text
    • http://zonatitusajobo.onlinewebshop.net/kadefowemo.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/blink_by_malcolm_gladwell_synopsis.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_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 5028 bytes
SHA-256: 92332833a062453a84ab6a72f26d03d4a01009e7bdacebefd4b615218d12ade9
font_01_sfnt_off0000f480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF480 10356 bytes
SHA-256: c7784499d4b4f76fbda919ede6d97dd40b0affd5d456e93a188e0335178f711d

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