Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec24f4253a9c83b…

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 16:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 984bdd340d495c456b35e7b64e9b6b88 SHA-1: a745ec77ed080c30062fa5ff394d2598d00eb035 SHA-256: 6ec24f4253a9c83b227836e71cbcce895e8ae0b3478edc0734f342fe16bed97c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://druttle.ru/award?keyword=zen+buddhism+for+beginners+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376866/normal_5fc69de2e75be.pdfIn PDF document text
    • https://jexelokase.weebly.com/uploads/1/3/5/3/135321670/87dbf5c610e6.pdfIn PDF document text
    • https://sewizafisebe.weebly.com/uploads/1/3/1/4/131437566/b24f73ffd2643.pdfIn PDF document text
    • https://xatoxelal.weebly.com/uploads/1/3/1/4/131482937/nowazirikijitorudoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473432/normal_6007ad4457b37.pdfIn PDF document text
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/rotedexosidubewi.pdfIn PDF document text
    • https://zibezalobe.weebly.com/uploads/1/3/4/5/134529300/ceadb2f3da3c.pdfIn PDF document text
    • http://avit0.pro/autocad_2017_patch_filedtjbw.pdfIn PDF document text
    • https://divupitibi.weebly.com/uploads/1/3/4/3/134328085/2fe3119e6fcde0.pdfIn PDF document text
    • https://jegobegopij.weebly.com/uploads/1/3/1/8/131871729/jurojopanisezurobuju.pdfIn PDF document text
    • https://jusodudefepad.weebly.com/uploads/1/3/4/6/134650432/mipozepodadavib_jesezo_bazojubixelimu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mesitineka.rf.gd/everybody_hurts_piano_sheet_music_free.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_off0000e086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE086 5308 bytes
SHA-256: da8f28f819dac72d48d0a25a487dcf37cd0fad457bdc0c9dc7edf5da8b4edd99
font_01_sfnt_off0000f26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26A 10188 bytes
SHA-256: 581e5e4c03b8d0b309daacb0d9e6581dd989d2d58d3f9dc2ed7bdf93f4078623