Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60003559118031f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 01:36:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 27e889ab88d568d4daba141de39911be SHA-1: 8dde486372bdb05e1a31afc9531ff50fd6d69667 SHA-256: c60003559118031f3ff76d5156d72db593f64b264878c5e77b8a1324a5e01911
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=deep+house+electronic+music+download In PDF document text
    • https://cdn.sqhk.co/jidulopavoji/hfNigVo/xepomitegariwabobas.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/jc8Vhgw/22952885091.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/erVsiey/vr_horror_games_for_android_without_controller.pdfIn PDF document text
    • https://cdn.sqhk.co/dukizukijire/bgejbAZ/mindshare_media_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/fudimesa/giDghhc/dragonvale_gem_egg_of_mystery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389084/normal_601f530e571d7.pdfIn PDF document text
    • http://xamakag.iblogger.org/118_freeway_traffic_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xotepugiz.rf.gd/what_does_all_the_colors_of_the_rainbow_mean.pdfIn PDF document text
    • http://budakofis.epizy.com/how_to_use_aux_remote_control_for_air_conditioner.pdfIn PDF document text
    • http://sidiwen.epizy.com/50865109496.pdfIn PDF document text
    • http://semiwexojexudu.epizy.com/bittorrent_pro_5._0._4_apk.pdfIn PDF document text
    • http://bituwevemexeku.rf.gd/10505232748.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_off0000e17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17F 5404 bytes
SHA-256: 9f3ca0c3badd1c6804f2d200747cd103a037be712d085cacfe60a43270569a3a
font_01_sfnt_off0000f3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C6 10400 bytes
SHA-256: 281c5a3ec12a512165b2e0c1c5723ecf355d8535f5cd2f27552eea9322624970