Malicious PDF — malware analysis report

Static analysis result for SHA-256 037c73c4cb42292c…

MALICIOUS

PDF

72.4 KB Created: 2021-02-16 22:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 28c3a8302028812ef6658ad1bcd1bbcf SHA-1: 4c1e82bf29a5448ed903f79d1739bc275494c947 SHA-256: 037c73c4cb42292c2043efb3076729548b9b50a776d26d69e97ee755472d5b6b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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=historia+del+voleibol+en+el+mundo In PDF document text
    • https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/3563071.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/xYyifgc/table_wood_cutter_shop.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/219591440841nuh5.pdfIn PDF document text
    • http://natenezen.22web.org/headlightmag_sales_report_2019.pdfIn PDF document text
    • http://refowozawigut.22web.org/cara_membuat_cv_di_hp_format.pdfIn PDF document text
    • https://fakebomazeb.weebly.com/uploads/1/3/1/4/131453402/tokuvaxa_wefasi_xisuv.pdfIn PDF document text
    • https://fidagavatijib.weebly.com/uploads/1/3/1/3/131398583/8333553.pdfIn PDF document text
    • http://detobusukited.iblogger.org/80368922086.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/9257399.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/doxodewelobexebek67qv.pdfIn PDF document text
    • http://rewita.fun/sewatujajekutimenopatozis1a1ms.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/fejenijovekozu/gnostic_book_of_hours.pdfIn PDF document text
    • http://datasixiva.epizy.com/xuzulajevag.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/orissa_human_development_report_2011.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/zakojufakozepizomekuxi.pdfIn PDF document text
    • http://sapuxomaz.epizy.com/construction_worker_resume_template.pdfIn PDF document text
    • http://ramogefakox.rf.gd/murukupe.pdfIn PDF document text
    • http://vafidufetavum.epizy.com/80149163654.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/wenikegokasuluxem.pdfIn PDF document text
    • http://nomekerileme.epizy.com/80346233057.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_off0000dd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD41 5132 bytes
SHA-256: 14122f9bb902d8f7f53f9fdd784c58b1e714c425d29ff4ed162ceaee15c2af60
font_01_sfnt_off0000ee99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE99 11164 bytes
SHA-256: bf46afd1f5807b10cbc6877619d3813d1b309ac1507c946e6189e2d66a274fe3