Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c8076f8bcf2796…

MALICIOUS

PDF

79.5 KB Created: 2021-04-04 11:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dba74910a39ffdd6caff8939be9db985 SHA-1: 1feded8752239058f9f4931359e4314d4d6ff55d SHA-256: 48c8076f8bcf2796efd8213257bf7da2c9ae88b0aa5df5d97ed32d4f9cc24fd4
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://botokaw.ru/wix?keyword=win+a+free+iphone+6+instantly PDF link annotation
    • https://cdn.sqhk.co/bexutavukaro/jdFYeHn/ancient_battle_tactics.pdfIn PDF document text
    • https://loworukad.weebly.com/uploads/1/3/5/3/135312099/9a27aafaf13937.pdfIn PDF document text
    • https://mubonunegaj.weebly.com/uploads/1/3/0/8/130874179/baa9404effb0d7.pdfIn PDF document text
    • https://cdn.sqhk.co/fidumugovoz/Chj2Mhf/hku_medicine_admission_2021.pdfIn PDF document text
    • http://rukafuxofi.iblogger.org/79406414745.pdfIn PDF document text
    • https://wuxuvekukiku.weebly.com/uploads/1/3/1/3/131380251/soxetibaroliso_zuredij_turikug_gobijofutuled.pdfIn PDF document text
    • https://zopojezumaze.weebly.com/uploads/1/3/1/6/131637354/gagafe.pdfIn PDF document text
    • http://takilajonireko.22web.org/zolejenosizunutodezasamug.pdfIn PDF document text
    • http://pitijebubitos.iblogger.org/bigg_boss_tamil_vote_season_2.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/biagdji/mega_farm_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/normal_12_lead_ecg_report.pdfIn PDF document text
    • http://wuwatomugexove.epizy.com/free_online_website_templates_design.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/20305217856.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/can_windows_10_be_pirated.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/how_to_address_ireland_mail.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/8899634080.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/world_map_with_latitude_and_longitude_lines_and_time_zones.pdfIn PDF document text
    • http://lelesajik.epizy.com/zipadifuzikebofera.pdfIn PDF document text
    • http://kitomov.epizy.com/calendario_uem_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/46902413248.pdfIn PDF document text
    • http://jibavuxi.rf.gd/convert_file_ke_jpg.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/where_can_i_learn_advanced_excel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 5044 bytes
SHA-256: 9de2512084dec0c0a08efade54b181e79988b52a5c3bd8aff44562e619a17332
font_01_sfnt_off0000fbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBD 10716 bytes
SHA-256: 7149c89a50c1c171f55c0819a7e45d7c66db79251cd903c23c0b6625f9036fce
font_02_sfnt_off00012091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12091 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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