Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cfea2e04ca28b1…

MALICIOUS

PDF

67.8 KB Created: 2021-03-01 05:58:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 544b558c7c7c4ee9044f9235dbc15901 SHA-1: f4981f87e7cca926bd1c5271c87a3265bb119708 SHA-256: 94cfea2e04ca28b18bc3c6b356de93101b5ada59c2c6ca724be8590be85cab40
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://druttle.ru/award?keyword=passport+9500ix+manual PDF link annotation
    • https://cdn.sqhk.co/foroboreb/hcje7hf/ribarutupumabajek.pdfIn PDF document text
    • https://cdn.sqhk.co/manigonodapu/UgeNghd/golf_clash_tommy_pro_tournament_wind.pdfIn PDF document text
    • http://sweetmeet.online/mathematics_for_machine_learning_best_books7x9xj.pdfIn PDF document text
    • http://maderajapodap.iblogger.org/80232416181.pdfIn PDF document text
    • https://sidopaxabu.weebly.com/uploads/1/3/1/3/131398246/pigapobinixe_fukufasavim_pamarukareve_tegibir.pdfIn PDF document text
    • https://mobefoba.weebly.com/uploads/1/3/0/7/130776725/vijebo_ganisefope_radomibasetuwin_tazoxatukeguw.pdfIn PDF document text
    • https://nenejiremox.weebly.com/uploads/1/3/0/9/130969141/5685991.pdfIn PDF document text
    • https://dixetomik.weebly.com/uploads/1/3/4/7/134775969/03ac62ddb69f6c3.pdfIn PDF document text
    • http://tamakar.xyz/animal_classification_worksheetsfftt2.pdfIn PDF document text
    • https://repositugi.weebly.com/uploads/1/3/0/7/130738607/ea724049a79e89.pdfIn PDF document text
    • https://zezevavibafano.weebly.com/uploads/1/3/5/3/135325489/7e1d9165af6e.pdfIn PDF document text
    • https://modotetizifoxi.weebly.com/uploads/1/3/1/6/131637555/sanapozorafovux-xupabo-zezigamusiroful.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/guwutivupudutu/assamese_album_gaan.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/android_emulator_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/72036597149.pdfIn PDF document text
    • http://jusolasoxo.epizy.com/certified_ethical_hacker_v9_study_guide.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_off0000cbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB2 5456 bytes
SHA-256: def5a69c00e00916bd5e8dd1ce7568f197da2a1f9f529824677870223fc046d6
font_01_sfnt_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 10220 bytes
SHA-256: 3f0dde84bba88e033c50f5a9759244a7e4a312e71a958b48ae110cd31a78beb1

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