Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed4c560867a0788…

MALICIOUS

PDF

75.5 KB Created: 2021-03-21 04:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be428685a278f0dcadc195d802e0f661 SHA-1: 2ecb3f8279e7def85fa292e6ab126d9c57294856 SHA-256: 8ed4c560867a0788d5485e72ec4e488fb62b7d5a81550aa31b0efa86326a98b0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'high school certificate of completion templates'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=high+school+certificate+of+completion+templates
    • http://papepoxavabezaf.iblogger.org/32323786912.pdf
    • http://passive-income.ru/whirlpool_duet_sport_dryer_belthpzp7.pdf
    • https://cdn.sqhk.co/pibutuvopedu/gcehfih/second_grade_math_ballpark_estimate_worksheets.pdf
    • http://komamoj.22web.org/tracfone_alcatel_flip_phone_user_manual.pdf
    • https://cdn.sqhk.co/wavefekus/hiPFRjf/best_photo_editor_for_ipad_pro_2020.pdf
    • http://rejorevubirobu.sportsontheweb.net/48638739138.pdf
    • http://haustova.com/badoo_latest_apkpj2cb.pdf
    • http://free-at.pro/unidad_3_leccion_2_test_answer_key77h0t.pdf
    • http://rudovatimokasum.medianewsonline.com/4th_grade_math_workbook_with_answers.pdf
    • http://lupelev.22web.org/fosekuzuj.pdf
    • http://tanemazijafawin.medianewsonline.com/what_are_the_principles_of_design_in_art_quizlet.pdf
    • https://cdn.sqhk.co/busanurutar/W1OA5Sf/installer_stylist_heaven.pdf
    • http://tedurelaseji.mygamesonline.org/income_tax_budget_2020_free_download.pdf
    • https://cdn.sqhk.co/mekurapiw/ec5hg5g/asus_data_transfer_iphone.pdf
    • https://cdn.sqhk.co/nixivezez/FojgSzI/fufowisekipenagos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b50c1691-d846-4ccf-81d1-8b920427c119/nikokarak.pdf
    • http://gavojomizam.epizy.com/43559068551.pdf
    • https://uploads.strikinglycdn.com/files/2993d8ee-1977-4cfd-b02e-a2b0f85dbe00/kasufabakasaw.pdf
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_e7a9775d16b14775b821999a2270ef34.pdf?index=true
    • https://761e60ea-5e0e-4c43-b4c2-f6a9045c608d.filesusr.com/ugd/545033_2559b9a04ced4cdb93242f5b48f5ab83.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f3d24744-4b05-4ce9-a277-75d2b3dd5ba2/do_mazda_cx_5_have_transmission_problems.pdf
    • https://uploads.strikinglycdn.com/files/d19e104a-489b-4015-a658-22cf9c695ba2/samsung_un55js8500_specs.pdf
    • https://uploads.strikinglycdn.com/files/0b9260d3-4417-4fb7-9351-340ecf61bfe8/parrot_bluetooth_mki9200_user_guide.pdf
    • http://lutewefopuv.rf.gd/bacteria_and_viruses_venn_diagram.pdf
    • http://kuxoxokazutuv.myartsonline.com/arm_controller_notes.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8fe.bin
83e641ebbf2e63fe50cd6646dcfa0f414240848dc04de9bf54923a3fabad5fa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FE 5392 bytes
font_01_sfnt_off0000fb30.bin
f9c0a4891ab1a141bdc03d0f244c88ea3ff939f9e16e9d0ef7bd8138f5985fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB30 10396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.