Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e923a714c4720c0…

MALICIOUS

PDF

72.9 KB Created: 2021-02-27 10:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 38be8e71c39bed24f70e5ce6e961e32a SHA-1: d5e9431657cac3a87e3189acc637498acd823579 SHA-256: 4e923a714c4720c0ccb293d5b0b58b5329f569e69269af4ffc61cfca03711546
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://dugedepap.ru/wb?keyword=canon%20mg3500%20support%20code%205b02 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486772/normal_601598b0848bb.pdfIn PDF document text
    • https://nikakakuko.weebly.com/uploads/1/3/1/8/131871571/8a4fd7.pdfIn PDF document text
    • https://siwusoxol.weebly.com/uploads/1/3/4/5/134584737/vezimawosufigodamid.pdfIn PDF document text
    • https://tazuwadafif.weebly.com/uploads/1/3/4/8/134857375/gikaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468823/normal_602a0f30dd58f.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/zasimeforozurajelan.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/4c8f23c930.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/how_to_participate_in_google_hangout_meeting.pdfIn PDF document text
    • https://pegojuzifaxoda.weebly.com/uploads/1/3/5/3/135309499/8427391.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/ageQgeK/57408374123.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474448/normal_5fed5b9709361.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/rapizulupalalojaviriru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_60178d2604c0f.pdfIn PDF document text
    • https://lirodenagegoket.weebly.com/uploads/1/3/1/4/131437677/ropazati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://litorow.myartsonline.com/38393037345.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_off0000de15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE15 5968 bytes
SHA-256: c823771bca592c7301144d4d0d2f8ac3ec19da1a8027b7d8fbfe1e15443d37cc
font_01_sfnt_off0000f245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF245 10752 bytes
SHA-256: 4a218519b3206194cffdc69d039a02d99173d61d0cb4980d8d7eb07211c1f36d