Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a224707249e80b9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-21 18:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e9ba834e7b0112ca6a3caa628fdc7ff7 SHA-1: 41d5610204c846f630228301eee3294d91fb3692 SHA-256: 0a224707249e80b9b44bc4a0fb28d8c8f37a9db09ec11ffbf0f618d2d21bdeee
244 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
  • 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 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.
  • 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=sks+rear+sight+removal In PDF document text
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/vakobenurumuwobigup.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/rekizuguzituri.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/0ce810c553bde9.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/dSggzih/3_asteroids_headed_for_earth_nasa.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/igic9tI/71833033292.pdfIn PDF document text
    • https://duzesoduvumasu.weebly.com/uploads/1/3/4/1/134131570/texosedujemesaruded.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/wgjhjgd/download_game_your_life_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jipogidara/b8JyP0t/eye_care_doctors_near_me.pdfIn PDF document text
    • https://vorevowupi.weebly.com/uploads/1/3/4/6/134633589/xamizewigoparina.pdfIn PDF document text
    • http://dadefuxafovub.22web.org/tombow_hand_lettering_practice_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwoxebu/cOTgnsf/apple_tv_nbc_sports_live.pdfIn PDF document text
    • https://cdn.sqhk.co/rarinuva/jj7ERgg/75732286386.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/pogodabex.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/hahWuFP/sugurosaletekuz.pdfIn PDF document text
    • https://benowanazopawa.weebly.com/uploads/1/3/0/7/130740092/6014304.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://merizipu.rf.gd/astrology_software_for_windows_10.pdfIn PDF document text
    • http://gigisijopa.epizy.com/production_equipment_list_template.pdfIn PDF document text
    • http://wepuwuzuvam.epizy.com/bujilefixuxa.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_off0000dfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBF 5324 bytes
SHA-256: f7542fe6e65667cef325e71acc8f9e1d655751ddd9bc62a561a7bc75f3249cf1
font_01_sfnt_off0000f1b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B5 10496 bytes
SHA-256: af8069065497709aa05faf330f3c155c7ef1122d362096cc8af4326f1e4bc134

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