Malicious PDF — malware analysis report

Static analysis result for SHA-256 1533c8d69ac441e1…

MALICIOUS

PDF

73.8 KB Created: 2021-02-08 08:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6cc7b1e703c8415e715d13e9cf15fcf3 SHA-1: e3ad60303c9ce0262afd3ba99d49d63763621262 SHA-256: 1533c8d69ac441e1386b5afda9674df06e4d72155c7a6093c55df0930617d499
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://jottigo.ru/aws?utm_term=borderlands+2+salvador+solo+guide PDF link annotation
    • http://natlab.ru/york_electric_furnace_manualsvjinu.pdfIn PDF document text
    • http://wamuterireted.iblogger.org/91432414743.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_5ff582b99107a.pdfIn PDF document text
    • http://laitlabs.pro/megukosavawql7x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445114/normal_5fd2dd553955a.pdfIn PDF document text
    • http://zevixoleg.iblogger.org/76807166321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446638/normal_6012e71390e11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/74375170014.pdfIn PDF document text
    • http://dilizefolu.rf.gd/letter_worksheets_for_kindergarten_printable.pdfIn PDF document text
    • http://zoregok.rf.gd/74135308811.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/53644316899.pdfIn PDF document text
    • http://netifikapiwi.epizy.com/bazadivixefapapibojomima.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/pazamazuvanobujukibipoj.pdfIn PDF document text
    • http://xetonuvabogo.rf.gd/sonaloguge.pdfIn PDF document text
    • http://pagiwufuvefukuf.epizy.com/panetoxax.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_off0000e375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE375 5236 bytes
SHA-256: 124c7b06af60698503c848e4788f799b077a32cf4fe5937978b70a6bb0bac8ef
font_01_sfnt_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 10912 bytes
SHA-256: 5e5481c1dd3eda2fecf61de223f7ff0f9398444c0ed2cb12f6eff4edec06f237