Malicious PDF — malware analysis report

Static analysis result for SHA-256 89497b19a370b241…

MALICIOUS

PDF

73.0 KB Created: 2021-02-23 23:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4b3185a41b5390bd751769ec6ff5b50e SHA-1: c67e7865a75db2bc344fda289c27b515d4fdc563 SHA-256: 89497b19a370b241e3eac5a01193dbd217e1fdfd69207541d8b560d1c8e6261b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/wix?keyword=oh+it%2527s+a+lovely+war+lyrics+meaning PDF link annotation
    • http://qwonder.space/alzheimer_disease_review_article_2018okkvt.pdfIn PDF document text
    • http://detonicinitalia.website/samsung_note_10_vs_mate_30_procfrol.pdfIn PDF document text
    • http://thesimplycompleteseries.com/81847375074p68vt.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/love_knows_no_boundaries_quotes0d9mw.pdfIn PDF document text
    • http://martans.space/852206093429x4ow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416671/normal_6004e791e7d60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475582/normal_600e0b9812568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410953/normal_6008a1f037585.pdfIn PDF document text
    • http://muzoc.xyz/cover_letter_template_for_nursing_assistant2wqpd.pdfIn PDF document text
    • http://znohist.site/variance_of_binomial_distributionlyde3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_5feebc944961f.pdfIn PDF document text
    • http://vorecan.fun/ponniyin_selvan_movie_hero7n0y7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451561/normal_6025dde0e3ba3.pdfIn PDF document text
    • http://dalkomis.website/628122201525iw4i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_601a37bf312c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jujalun.rf.gd/front_end_estimation_multiplication_worksheets.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_off0000e18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18E 5528 bytes
SHA-256: f2494f8a368066638e3e796e973252ce9adc84c6a67fa8eaba9f70e14d25a69b
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 10116 bytes
SHA-256: 0ccfe0a26ea4ed6951ba85abaa922b26a09d5a995efac07f591fcb0001c3c2fc