Malicious PDF — malware analysis report

Static analysis result for SHA-256 242cce340fb2646a…

MALICIOUS

PDF

69.7 KB Created: 2021-02-21 18:54:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d120aaca16d08669e6b19b3f608dfb7b SHA-1: b61aff5246cacfc810324ee85f56b46e7c116104 SHA-256: 242cce340fb2646a618c828c253220215443bd7153bd8872cae8c75615e721a4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/aws?utm_term=cual+es+la+estructura+del+texto+argumentativo+wikipedia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381534/normal_600fca584ca8f.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/eWja3hg/75358902024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fe2e701adeef.pdfIn PDF document text
    • https://nezubarenegutel.weebly.com/uploads/1/3/0/7/130776328/8496495.pdfIn PDF document text
    • http://dapodulasopo.iblogger.org/96248905352.pdfIn PDF document text
    • https://cdn.sqhk.co/ninafoso/fWGgiYa/lomesedodefemozofekuboti.pdfIn PDF document text
    • https://kimodoximotoden.weebly.com/uploads/1/3/1/8/131856266/wabowuzasawavo_worugupakeduzad_xalixofudo.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/iegijd6/jorawuzomuloxerulekebolip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403560/normal_60068d3be2a6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_602f18b61c963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458145/normal_6013c35cbe044.pdfIn PDF document text
    • http://loleveze.iblogger.org/91587911957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_601d90d94e594.pdfIn PDF document text
    • https://cdn.sqhk.co/rarinuva/jaswEh3/divizazuwerulaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5ff29ca139ba6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sinipuxi.epizy.com/letter_in_german_template.pdfIn PDF document text
    • http://filexumif.epizy.com/event_management_psd_template_free.pdfIn PDF document text
    • http://vekowaxijoperun.rf.gd/12787785221.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_off0000cf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF38 5584 bytes
SHA-256: 86583851369c3e5e93a0f36758f83ebad63866662cbc7c22862d4e5fe5268647
font_01_sfnt_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 11624 bytes
SHA-256: 6bdc5cdc3e979550f5888ca67242d11ebdc3875919b31d5fef16065a883581a2