Malicious PDF — malware analysis report

Static analysis result for SHA-256 8392c836c4fcb53c…

MALICIOUS

PDF

69.5 KB Created: 2021-01-28 14:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9544e30db9c65bd7cb2bedcf586b2f6c SHA-1: a5a7c7b7820f8519226696608b9e03a423efff92 SHA-256: 8392c836c4fcb53cd627d18fba57d2808770986db7b5a9d9e74ccdef1746686b
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://maypoin.ru/aws?utm_term=android+emulator+connect+localhost PDF link annotation
    • http://aduo5.online/weather_news_live_stream_now2dw5h.pdfIn PDF document text
    • http://petrol-v-pol-price.site/orespawn_1._12_download8ix0n.pdfIn PDF document text
    • http://lady-bug.club/anime_avatar_maker_mod_apkngmhm.pdfIn PDF document text
    • https://vaturelola.weebly.com/uploads/1/3/4/7/134704713/dokima_zupid_karitinafup_bobome.pdfIn PDF document text
    • https://favotofuti.weebly.com/uploads/1/3/1/8/131871633/ececad6ea897ffc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390371/normal_6003c7fddc60c.pdfIn PDF document text
    • http://lastmarkt.ru/stylish_fonts_for_logoelysc.pdfIn PDF document text
    • https://rujupiben.weebly.com/uploads/1/3/4/8/134852491/1364462.pdfIn PDF document text
    • https://nobarikanu.weebly.com/uploads/1/3/1/4/131483152/a5f2411621bc04.pdfIn PDF document text
    • http://fitokapss.xyz/zagarepivarutimet749f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499995/normal_600c0f3ada4e5.pdfIn PDF document text
    • https://siputewebototab.weebly.com/uploads/1/3/4/4/134480832/zibiso-pefiwopojix-juromadofiwedax-gidalev.pdfIn PDF document text
    • http://trells.space/talking_tom_cat_online_shoppingqf86x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447641/normal_5fd61402aa62e.pdfIn PDF document text
    • https://ruxabetuju.weebly.com/uploads/1/3/2/7/132740595/rigusejazavazo-lisanipi-kobadafojodutu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DF 5168 bytes
SHA-256: 3ec67c2913a5ec52d6201e75328e5f1a840aedd58f885bb902c18400e1579db6
font_01_sfnt_off0000e43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 10920 bytes
SHA-256: dc00a1d9e5aef69c11cacb2a6184bd50a1603e17c2a3d7676796b4649111d969