Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fce066a08219048…

MALICIOUS

PDF

73.0 KB Created: 2021-02-13 11:16:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6232f946eed1ab6ece32d30a902e3ff5 SHA-1: f828bae21cd2a6d4fce140a9c8de93ba7ed8248f SHA-256: 6fce066a082190485b8538d5f52fb83f4c3fa8dc556b7b14af6e63d3e82925be
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=lesson+4.4+practice+a+geometry+answers In PDF document text
    • https://cdn.sqhk.co/rubogomuweme/a4CRief/33622240799.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/iighjin/64604155125.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/d3ujbgf/esddi_photo_studio_light_box_20.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/U6r1Mhi/93503010463.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/igEJFCj/1230695585.pdfIn PDF document text
    • https://venevivoxeda.weebly.com/uploads/1/3/1/8/131857756/cd266852db34f3.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/ciicjiW/electrician_apprentice_salary_2019_california.pdfIn PDF document text
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/a683212b4e8e6.pdfIn PDF document text
    • https://cdn.sqhk.co/ripigopes/RJcCBks/pixel_zombie_frontier_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/ghgg5T7/symbol_barcode_scanner_driver_windows_10_download.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/murudute/1994127783.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/bc_firesmart_homeowners_manual.pdfIn PDF document text
    • http://galopaxuvubopuj.rf.gd/written_communication_skills_interview_questions_and_answers.pdfIn PDF document text
    • http://dapuzuro.epizy.com/54775838691.pdfIn PDF document text
    • http://tijiwef.epizy.com/idle_poring_guide_knight.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/induction_cooking_temperature_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/x_plane_simulator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/nhng_game_offline_hay_android.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/aliens_1986_movie_free.pdfIn PDF document text
    • http://xarozitapakegur.epizy.com/967395595.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/lizuvifinifedimaxeregos.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_off0000df6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6D 5476 bytes
SHA-256: bd55b8b04429257ece029e2e82767547da46b690ed4b7665d67d0b31642b55a8
font_01_sfnt_off0000f21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21D 10716 bytes
SHA-256: 8c0f187d8a74e11b007a54725751cf74ca05a723a54e3fdb7e3e6fd6f4c3a73b

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