Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b35cad62d5d6dd…

MALICIOUS

PDF

68.9 KB Created: 2021-02-16 13:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 75c9ad0d00844ae4d9672edc1d20a5d3 SHA-1: b3ab87d58627b78b475125f89619e370f9836a83 SHA-256: 84b35cad62d5d6ddf59de965874e0c8fc1334b55aaadc303e273cd6a9f5e0a0b
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/wix?keyword=hito+projection+clock+manual In PDF document text
    • https://cdn.sqhk.co/vibisidumes/Lhjjbij/tower_builder_game_online_free.pdfIn PDF document text
    • http://lodixewovufosa.iblogger.org/android_project_root_folder.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/ajdihWF/mercado_pago_chile_atencion_al_cliente.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473963/normal_5ffc24545d686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469104/normal_600fb6d7939da.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/Efjj1ge/47678725487.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/hgg4geH/fekinuwime.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/c6Qhfhf/lozusisetere.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5fd2541e5c798.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/OijQieC/togod.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/diegejg/carpenter_ant_nest_removal.pdfIn PDF document text
    • https://cdn.sqhk.co/sikereri/jibrgeU/thorax_medical_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_5fd94a8216050.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/jifedefujodu/61060120176.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/adblock_plus_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/95001053804.pdfIn PDF document text
    • http://zuwewabarabin.epizy.com/brief_information_about_madhya_pradesh.pdfIn PDF document text
    • http://fodakobenolam.rf.gd/reported_speech_mixed_exercise_2.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_off0000d321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD321 5004 bytes
SHA-256: d119f8c9fcc4f6bc390ca93019290566dc0b123e7f313a1391d97ac28a6633d7
font_01_sfnt_off0000e40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40D 10164 bytes
SHA-256: 3e70053a693acae6c3f4e3f2f2f670d84990abebcfb238d2d69a2abadec8f656