Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0aa3f53ee00bddc…

MALICIOUS

PDF

73.4 KB Created: 2021-02-28 23:26:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 212e4bea618ec28eca6a534fe79858a9 SHA-1: 594d62c44e314b0c80ca05eb371d6334969c52ef SHA-256: b0aa3f53ee00bddcc5c7f9113f967a67b883e3a95371fe4627537c32938b4100
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=which+of+the+following+activities+is+an+example+of+inferential+statistics In PDF document text
    • http://ashotik.space/prescription_for_nutritional_healing_5th_editionhtunp.pdfIn PDF document text
    • http://detonic-hypertonie.website/bacteria_virus_worksheet4kfxp.pdfIn PDF document text
    • http://app-3null.com/zumafarinagixajaiyi9x.pdfIn PDF document text
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/803670.pdfIn PDF document text
    • http://kulokozataxat.22web.org/fracture_2007_parents_guide.pdfIn PDF document text
    • http://okrasote.info/earn_to_die_2_google_sites98pcn.pdfIn PDF document text
    • http://babubusawase.22web.org/cartesian_dualism_mind_body.pdfIn PDF document text
    • http://proita.fun/ata_2015_guidelines_thyroid_cancerptfb4.pdfIn PDF document text
    • http://meetplafond.xyz/redolitonifaxeaf3fc.pdfIn PDF document text
    • http://topplafond.xyz/which_of_the_following_is_not_an_example_of_general_deterrencev60aw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376856/normal_5fcf86f9280b6.pdfIn PDF document text
    • http://blancer.xyz/woxopewojikamiwepekagexucibwt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459185/normal_601ad79c92984.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501791/normal_5fc74c6e0af56.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/pukiza/muscular_system_worksheet.pdfIn PDF document text
    • http://sedijinuv.epizy.com/yahoo_aviate_launcher_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/mikojumujuxipiligim.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/simpson_3000_psi_pressure_washer_pump.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_off0000e2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 5660 bytes
SHA-256: 2bb65911da4a9a93ad493e466899c9ff58c50e9f34868bcc17a0f4a199273804
font_01_sfnt_off0000f60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60A 9844 bytes
SHA-256: ad8e776d0d25af783b5c6ea0a0ebe002f16aa24f2f108f1769ade1191faca1c6