Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c9a8ac5b1d135a0…

MALICIOUS

PDF

76.9 KB Created: 2021-03-04 10:17:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d55624c1d7439d4733948adc29e418dd SHA-1: 16465bde6d38470f9639ab93dfe657837ccdc122 SHA-256: 4c9a8ac5b1d135a065ae223bca3b67984222125f481c614adae42b3c068ad57f
126 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
  • 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://vilenefex.ru/award?keyword=junie+b+jones+film PDF link annotation
    • http://crawlmqyu.space/nonton_a_street_cat_named_bob_2016_subtitle_indonesiamwnsn.pdfIn PDF document text
    • https://salogisamokowo.weebly.com/uploads/1/3/4/6/134649366/sugumuxer-gogez-sanonipamosiz.pdfIn PDF document text
    • https://dikabapor.weebly.com/uploads/1/3/4/6/134620412/wibojiv_pexafawawig_nudesomidobezew.pdfIn PDF document text
    • http://lifeeuro.info/25574307871jj7lr.pdfIn PDF document text
    • https://muxavitegujun.weebly.com/uploads/1/3/1/6/131637584/lodunuvikaradab.pdfIn PDF document text
    • http://prizinsta.site/430821971989b6op.pdfIn PDF document text
    • http://espaceabonnes.com/62824836949ra7ie.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/2932876056.pdfIn PDF document text
    • http://ladyso.ru/how_to_open_the_graco_duoglider_strollertra39.pdfIn PDF document text
    • http://alifan.store/al_quran_malayalam_malabar_translation_mp3obogs.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/1659161.pdfIn PDF document text
    • http://vwwv-avito.online/bloomington_mn_police_department_arrest_reportsbq8al.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/pisik/xubotufo.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/nugawasijadosududanewur.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/48766269189.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_off0000f1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C6 4812 bytes
SHA-256: 48c31ac0852ff054263c3e3a33f96fef341907eb22cdc293aab368f78bddb34a
font_01_sfnt_off0001021e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021E 10760 bytes
SHA-256: 0e14e26571fa582a198654e4e48a7977cc0bc37b59d4b7dbdfdaf456899816e4