Malicious PDF — malware analysis report

Static analysis result for SHA-256 70808eae1e1b42cf…

MALICIOUS

PDF

72.8 KB Created: 2021-02-27 19:35:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f184ba62950cba32be5a547c687c9809 SHA-1: 8040782e21aa200498a1627628ca07cd14c081fd SHA-256: 70808eae1e1b42cf12adcfa94501c684a2f7764d9e74322e24cee5553a71ee28
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://kuzutuzo.ru/award?keyword=modern+physics+krane+4th+edition+solution+manual+pdf PDF link annotation
    • http://duxaromovaxizom.iblogger.org/tcs_aptitude_questions_and_answers.pdfIn PDF document text
    • https://dikasawo.weebly.com/uploads/1/3/5/3/135349802/2946492.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/tactics_by_gregory_koukl_free_download.pdfIn PDF document text
    • https://fuwemuwiwogul.weebly.com/uploads/1/3/4/0/134016804/nubiwumawedafajuti.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/44986550690.pdfIn PDF document text
    • https://cdn.sqhk.co/naxetimi/hhh39jb/can_you_escape_the_room_6_level_25.pdfIn PDF document text
    • http://sallehub.xyz/itbp_ka_full_formukwrf.pdfIn PDF document text
    • http://filfex.ru/82968801279tj4j7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jorowoti.epizy.com/loaded_baked_potato_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/potivipudepuko.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/guerrero_advanced_accounting_solutions_manual_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/wovoka.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_off0000dde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE8 5652 bytes
SHA-256: 266db46d93b2f2402bd6ada560c8c9dde6cea3cfcc2ca879901de6a5efdd1423
font_01_sfnt_off0000f117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF117 10744 bytes
SHA-256: 9fb77c3cc96db4da5086c33d6cb68d4e1d5683eb6bf979f060149f133c47b27c