Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a7c28ce8ab2eca…

MALICIOUS

PDF

69.0 KB Created: 2021-01-21 00:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 882b2057ba7e64f76eeac078664dae7e SHA-1: c4113af382707a4ef0532a2442e7efc739eba4c8 SHA-256: e3a7c28ce8ab2eca36725bce7861fcf6f91753b766ae418c286993d39be85f62
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/wb?keyword=zombie%20tsunami%20game%20free%20download%20for%20android%20tablet PDF link annotation
    • https://devatokur.weebly.com/uploads/1/3/2/6/132683056/9318405.pdfIn PDF document text
    • https://site-1168191.mozfiles.com/files/1168191/wudavopupibajopimatizi.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/3511744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481516/normal_5fb357768605c.pdfIn PDF document text
    • https://site-1176298.mozfiles.com/files/1176298/kerutijejinemunefo.pdfIn PDF document text
    • https://gofadoden.weebly.com/uploads/1/3/4/6/134615513/wexupa.pdfIn PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/6852294.pdfIn PDF document text
    • https://xefafarorul.weebly.com/uploads/1/3/4/6/134698093/9130170.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/vikiziw.pdfIn PDF document text
    • https://tepugajir.weebly.com/uploads/1/3/0/8/130874129/tuwefabekezeviji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492918/normal_5feecff5c75bd.pdfIn PDF document text
    • http://fowirunuwajuk.iblogger.org/gixetegejadazevunofurazuk.pdfIn PDF document text
    • https://site-1177840.mozfiles.com/files/1177840/how_to_bake_thick_pork_chops_tender.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suvoxezol.rf.gd/30847930888.pdfIn PDF document text
    • http://mowumaja.epizy.com/40532207411.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_off0000d010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD010 5416 bytes
SHA-256: 8bc9a80b06a59016f88d0be73dc82470e8d7cb3d7c80adb5e0a37167ddd33ac4
font_01_sfnt_off0000e27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27A 11004 bytes
SHA-256: 1bb21eb0d72eba492c987827abe8ddb0b8aa58d70c7dd703ce8bc1f7059569f8