Malicious PDF — malware analysis report

Static analysis result for SHA-256 563147bff86b2ac1…

MALICIOUS

PDF

77.6 KB Created: 2021-03-02 16:37:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a9c1add269f6f993d78882ee4df735fa SHA-1: 2a51285a1d1d30a9037783f2b07bddf49f3e23b4 SHA-256: 563147bff86b2ac1a4e445d0bb759da575e9b4f301f861b20f054b1e1985bcf0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://vilenefex.ru/wix?keyword=composicion+del+aire+que+respiramos PDF link annotation
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/kimakanuj-fujaj.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/cijqghY/joker_songs_ringtones_free_download_for_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/edijijt/75892331248.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/cr9vgNn/it_s_full_of_sparks_apk.pdfIn PDF document text
    • https://nikigefewava.weebly.com/uploads/1/3/0/7/130775032/9501528.pdfIn PDF document text
    • https://zufikuwokuz.weebly.com/uploads/1/3/4/5/134522796/2278117.pdfIn PDF document text
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/rexepup.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/B2ificx/kingdom_defense_the_war_of_empires_td_defense.pdfIn PDF document text
    • https://cdn.sqhk.co/pamezuravuno/cxjdjju/98041480777.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/neviwove/bikogoxixu.pdfIn PDF document text
    • http://pibekolovaxizon.epizy.com/deductible_home_mortgage_interest_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/penepobowur.pdfIn PDF document text
    • http://segisubab.epizy.com/dinitrol_4941_data_sheet.pdfIn PDF document text
    • http://kazowaz.rf.gd/anandam_telugu_movie_bgm_free.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/stock_audit_report_format_in_word.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_off0000ee19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE19 5252 bytes
SHA-256: 47607daee41e1add1ee21efe296ed2073a41f7b5f9f0ef9031eda6d3e30579e9
font_01_sfnt_off0000ffd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD4 12268 bytes
SHA-256: aec1a3260c00f086e9ea740e289032d1e840c558f807e0fb929c24e1bc51c49d