Malicious PDF — malware analysis report

Static analysis result for SHA-256 630e1e77be7ae716…

MALICIOUS

PDF

63.1 KB Created: 2021-02-16 07:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0f64aa503a9df881faf580cc7d1c6071 SHA-1: 9a8a3df3f1756dfc01972a79cc403a26ea71c08a SHA-256: 630e1e77be7ae716e608a94363b2c22577432d49943d4300a0d3fbf640275ad0
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to suspicious domains, and is flagged as a link farm on disposable hosting. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the presence of many external links suggests an attempt to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=richard+sigmund+death PDF link annotation
    • http://katermore.ru/nuxikukoxusakidztijs.pdfIn PDF document text
    • http://kufemotobenin.66ghz.com/escape_room_game_answers_level_3.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/jeULpXy/concurrent_enrollment_vs_ap.pdfIn PDF document text
    • http://gojepifega.22web.org/algebra_1_ratio_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/fsdwU9b/the_wolf_online_rpg_simulator_best_skills.pdfIn PDF document text
    • http://haifaiv.ru/ludugurabefafomajutalatoxv9jyu.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/h2csE0S/lullabies_songs_for_babies_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/gybjaid/83189830078.pdfIn PDF document text
    • http://fruit-citrus.space/2563309089654olb.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/wGtngfo/fate_of_racing_furious_8_drag.pdfIn PDF document text
    • https://cdn.sqhk.co/wirubetena/hhh5ifA/cyclebar_midtown_schedule.pdfIn PDF document text
    • http://kopolebukerone.iblogger.org/2019_calendar_editable_free.pdfIn PDF document text
    • http://timelessdecorum.com/54615566025zav5r.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/wukara/angularjs_documentation.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/fugaxoxaranosatubevipaj.pdfIn PDF document text
    • http://buwomir.epizy.com/competency_mapping_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/rumezuton.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/cbse_board_class_12_2020_date_sheet.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_off0000bc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0B 5328 bytes
SHA-256: c98837a2fbafdd6c9135c74072a27a5fd48c9089219081787501271facba30f8
font_01_sfnt_off0000ce00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE00 9896 bytes
SHA-256: 0a8e2e7313b9e472c143a3ecf12a637b5fdf2d9e0dd120fcce206680fb8aefed

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