Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ea6aa2e4013a63…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 14:27:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 648e2e13f1a4651bf5e90f1cca125883 SHA-1: 6cee816918469e2bc1bdd498cf8129ab57e4bdf7 SHA-256: 37ea6aa2e4013a63dd9dc8742663454a7f25fe2eca3df2fcc1d4285f5295da2f
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://druttle.ru/award?keyword=how+to+program+distech+controls+thermostat PDF link annotation
    • http://contact-git.top/62402819862hx1f0.pdfIn PDF document text
    • http://mestorating.ru/fafilinaguderusedibilodangr5ax.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/haowaVM/ginodetow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414688/normal_60081b4cda64e.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/CHrgige/zararopezew.pdfIn PDF document text
    • https://cdn.sqhk.co/miseseren/ovY3vhi/50765132965.pdfIn PDF document text
    • https://cdn.sqhk.co/wixakulu/jeMggUc/pevivodefexedawunuribo.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/iGEigig/24450886746.pdfIn PDF document text
    • http://slmit.space/52294118368vh9jb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_601f2e41b24c4.pdfIn PDF document text
    • http://makipoduzoru.22web.org/48146344897.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/eih6TXK/zig_zag_lines.pdfIn PDF document text
    • http://avtoshkola-region26.ru/nelagipopovub3xpo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421039/normal_601e217d35133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487902/normal_6039a965cfd63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suzoduw.rf.gd/xovowit.pdfIn PDF document text
    • http://lizuratudesaxop.epizy.com/17957206974.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_off0000ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 5540 bytes
SHA-256: 561d2978f8c6959c029ee9e0003e916f7d9f3020f8471fd74aa414cd99b1a393
font_01_sfnt_off0000f0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 10712 bytes
SHA-256: 4502da098c65d9d224349e9b6a6dc95e5fad56e8adce9ddefb8f4983ed78a10e