Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae7567832ebf6c0…

MALICIOUS

PDF

69.4 KB Created: 2021-02-12 06:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a775f77635ba037538e358fb7858eae6 SHA-1: ac04ef3c685ddbdaffee2e2c48db441851514680 SHA-256: 2ae7567832ebf6c006d2962dd08129e3fc00714bf2b0eabb03c9879bd3f72a42
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://baarspo.ru/wix?keyword=wnep+school+closings+and+delays+pa PDF link annotation
    • http://verifedform.com/apuntes_examen_acceso_abogaciaw05h7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445877/normal_5ffd07662fcea.pdfIn PDF document text
    • http://xonesasa.iblogger.org/buy_egyptian_cotton_sheets_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_5fd9ba38d4d5f.pdfIn PDF document text
    • http://drovazvenigorod.ru/23093781358lavwq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_5fd75ad88ad36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389104/normal_60254edb8b499.pdfIn PDF document text
    • http://rivimebowov.22web.org/41268922682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448536/normal_5ffb3abe0ab99.pdfIn PDF document text
    • https://kuzosilu.weebly.com/uploads/1/3/2/8/132815793/3086994.pdfIn PDF document text
    • http://trellos.fun/examen_de_manejo_en_new_jersey_gratilz7xw.pdfIn PDF document text
    • https://xotozefubineru.weebly.com/uploads/1/3/4/5/134576546/pixefuzifajuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465025/normal_5fdc41b7c1c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473415/normal_60125d6d84c83.pdfIn PDF document text
    • http://tehnikator.ru/48672014588komgb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nebopujewewap.rf.gd/25801682190.pdfIn PDF document text
    • http://sixosotonipo.epizy.com/mla_citation_website_format.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_off0000d323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD323 5352 bytes
SHA-256: 3330469975a1635efca04390cb978cd3ce1325e448ced8e4603ac09251717113
font_01_sfnt_off0000e573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE573 10160 bytes
SHA-256: 16bea2fdd49d21b72372002987d2a5c06d90cdc8697a72bc5cd44a842a0c2610