Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bddf0cef1679497…

MALICIOUS

PDF

73.4 KB Created: 2021-02-11 08:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3481ecdf8efb89a73198eb25258a800d SHA-1: 19c8293cfbc595164ed9b4bf505de7507a689169 SHA-256: 5bddf0cef1679497151073021949163efb4518526a8cf847dc65f732e58ade74
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/wb?keyword=children PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474456/normal_5fdea383aba14.pdfIn PDF document text
    • https://sobiwololisa.weebly.com/uploads/1/3/0/9/130969717/rinubijewep-doseserenilono.pdfIn PDF document text
    • https://cdn.sqhk.co/zekoparan/RihPic3/coloring_by_numbers_for_adults_app.pdfIn PDF document text
    • https://xupijologa.weebly.com/uploads/1/3/5/3/135327862/gakenofawe.pdfIn PDF document text
    • https://makojinoguj.weebly.com/uploads/1/3/1/4/131406607/7778846.pdfIn PDF document text
    • https://baputopozim.weebly.com/uploads/1/3/5/3/135336161/mubobekixiligun_suzuviputolasig_vekulipakamusi.pdfIn PDF document text
    • https://pinowutofabu.weebly.com/uploads/1/3/4/7/134763632/53e217a0e72.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/eidhgtK/13254359194.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465905/normal_6022da3562e5e.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/CjjcjeH/download_popping_bubbles_game.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/zemunomipazikez/prodigy_math_game_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/belimbing_wuluh_hipertensi.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/19577491412.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/27053096085.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/junazoponajunas.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_off0000e111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE111 5412 bytes
SHA-256: 71f4d93c19ca9a3ed0a010c40ff0137f5a846dab1449a688f88bd87a211c872c
font_01_sfnt_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 10916 bytes
SHA-256: 112b43ca9f4add48bb63e60051e353605df5cde4e6928a2facae096868cc7a9f