Malicious PDF — malware analysis report

Static analysis result for SHA-256 f345e5d9fd8c170c…

MALICIOUS

PDF

71.6 KB Created: 2021-01-24 07:37:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a3efeda17320bbb490015561d7598062 SHA-1: 6a1eb4b2a92faad29952587eb2e38d859335124d SHA-256: f345e5d9fd8c170c0536ee9a76cad76ca5d0301ef6d3e69c30c70195798f95b3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://leonvi.ru/aws?utm_term=bear+notes+alternative+for+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412170/normal_600009d98199e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_600cdfa888b7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372373/normal_5fde2e73b3e94.pdfIn PDF document text
    • https://site-1246955.mozfiles.com/files/1246955/xulojegejoxoguvaloj.pdfIn PDF document text
    • https://cdn.sqhk.co/xugikokazo/Uc8boCT/roblox_skyblock_money_hacks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427094/normal_6009630a5219b.pdfIn PDF document text
    • https://site-1217043.mozfiles.com/files/1217043/tiletozemo.pdfIn PDF document text
    • https://site-1177725.mozfiles.com/files/1177725/83352676475.pdfIn PDF document text
    • https://tomutoremaduv.weebly.com/uploads/1/3/1/3/131398477/gavenaroja_zexof_kudozipuxerami.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/igfl3gi/mitur.pdfIn PDF document text
    • https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/ff9b758d.pdfIn PDF document text
    • https://zevakevo.weebly.com/uploads/1/3/5/4/135400716/delujo-tibipapajavo.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/6258617.pdfIn PDF document text
    • https://cdn.sqhk.co/bitenutugiw/hiahdgg/christmas_song_quizzes_and_answers.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/wulagisi/37218061213.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/53220760174.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/xitevo.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/9807513643.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_off0000dc00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC00 5008 bytes
SHA-256: 609288c9f02f0358b34d3b65372fa772a63c685b46ab4ddc0a2d04e8e359e533
font_01_sfnt_off0000ed1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1F 10520 bytes
SHA-256: 845444384e989b8d1433ae0eb08576b34901bfec1e1f1faa69ae705aebf03d87