Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a448765240b36a…

MALICIOUS

PDF

77.2 KB Created: 2021-02-15 04:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f5d1f01150df232abae9bf05aa3d1b65 SHA-1: 5c20abc1f893c72bb9a45c987f9ccee302d8ae66 SHA-256: 49a448765240b36adb30a766c305f4effd6f0edb7306a53280863fb7355aee05
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=king%20size%20platform%20bed%20plans PDF link annotation
    • http://trynutra.shop/calendar_2019_hindi_free_downloavv7fg.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/hdhfj5D/26440077450.pdfIn PDF document text
    • http://alifan.store/blank_map_of_canada_printableq7r66.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/kj3gjxs/pocket_ants_colony_simulator_mod_apk_unlimited_money.pdfIn PDF document text
    • http://lavka-karamel.ru/dulaknvk41.pdfIn PDF document text
    • http://ranomurivokav.22web.org/53053199247.pdfIn PDF document text
    • https://cdn.sqhk.co/lunemitibojo/haIjdid/xatulobozamew.pdfIn PDF document text
    • http://shoop-fn.ru/borejigeroiq4f.pdfIn PDF document text
    • https://zimizediregewoj.weebly.com/uploads/1/3/4/0/134040679/7045117.pdfIn PDF document text
    • http://autoupgrade.website/rare_record_collector_price_guide9el8v.pdfIn PDF document text
    • http://podarokinsta.site/lulidejevijabaninivazavoxd4ioj.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/wijhjlr/taxi_driving_simulator_2016_mod_apk.pdfIn PDF document text
    • http://muxusapefon.iblogger.org/total_conquest_offline_mod_apk_terbaru.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/punurum/rugoxek.pdfIn PDF document text
    • http://gikiwajufekozi.rf.gd/67590538085.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_off0000ef9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9C 5520 bytes
SHA-256: b1b649b2fabd87065cee1eb434090fe761e3e931adeb2da8002cf83c769b831b
font_01_sfnt_off0001025a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025A 11052 bytes
SHA-256: bb443ab553eddc944426357aa27c3e8d90b406607a7acc32b7a6b1c9686e6778