Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0bc71fe2ed40d66…

MALICIOUS

PDF

72.4 KB Created: 2021-03-07 13:37:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cd749e94c69285d0f97781d8fc3390da SHA-1: ce373508f988c724d7f81db114289ea162bcb176 SHA-256: a0bc71fe2ed40d666813fdc176ca4b017ceb8f9a62e8763c4053b3cfdd8c712a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=two+negative+effects+of+the+columbian+exchange PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367674/normal_600b8f178fd7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_602ebbb24eb24.pdfIn PDF document text
    • http://zinedoxo.22web.org/maths_graph_paper_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_6044633e224ef.pdfIn PDF document text
    • http://nujiwuwuxazasu.iblogger.org/xuwifaxutato.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/ghahfhg/98908257695.pdfIn PDF document text
    • http://davavemoj.66ghz.com/serta_motion_essentials_adjustable_base_king.pdfIn PDF document text
    • https://cdn.sqhk.co/javufikari/gjfSUgi/miracle_box_crack_2._91.pdfIn PDF document text
    • http://fasibada.22web.org/google_chrome_version_history.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/sghgjhe/evacuation_map_sonoma_county_shady_fire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457577/normal_6036d65328d17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490542/normal_5fd0e6378b97b.pdfIn PDF document text
    • http://rivubet.22web.org/metforas_de_la_vida_cotidiana_george_lakoff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465930/normal_5ff4663fdc40b.pdfIn PDF document text
    • https://cdn.sqhk.co/xinefegepe/ip4hjE9/84638139170.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://godutiliwaganos.rf.gd/12_angry_men_book.pdfIn PDF document text
    • http://zifixatef.rf.gd/6852864516.pdfIn PDF document text
    • http://levologujarobe.rf.gd/xitubazajuwulotuxuni.pdfIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_7d544014638e4ed0a2de309142e8ab37.pdf?index=trueIn PDF document text
    • http://pafisepobisu.rf.gd/91996723105.pdfIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_b6426cc3c0704a0fa47f8b3efe0d6505.pdf?index=trueIn PDF document text
    • https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_e92d66e7a0984cf3a0f610186095e818.pdf?index=trueIn 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_off0000dfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 5508 bytes
SHA-256: 2ffd905b68c3b17b47de522f3454ff0cd192ee318962f10f94bff9d66cf870d4
font_01_sfnt_off0000f268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 9988 bytes
SHA-256: 71cd9d1bca31dc0fff0bfa631725d0013da7237f85111c462bd98d16e3b7a69a

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