Malicious PDF — malware analysis report

Static analysis result for SHA-256 35abc87a8bf5db95…

MALICIOUS

PDF

66.9 KB Created: 2021-02-03 10:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 204622baf2948ee8bb84c53ab7ece650 SHA-1: b440b228b3edd8495817ccb210ffa062ac7f40e8 SHA-256: 35abc87a8bf5db95066e6473930674773bc23e2dfe47679f575faed7893f52e6
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=realidades%202%203a-%208%20crossword%20answers In PDF document text
    • http://tixivepemom.22web.org/labalifewetulodadirelap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454681/normal_5ffb0c362e57c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_6009c89397f07.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/3jiVijq/rainbow_dash_colors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_5ff59e66de86a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5ff3bafdc6b18.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/likadojivivofu/tawizasi.pdfIn PDF document text
    • http://bulofowomogi.epizy.com/66402550848.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/radazedegebikuwaz.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/jain_minority_scholarship_form_online.pdfIn PDF document text
    • http://nozovov.rf.gd/futures_spread_trading_the_complete_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/47984445453.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/47083399925.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/south_movie_film_2018.pdfIn PDF document text
    • http://kalilom.epizy.com/ganerexafi.pdfIn PDF document text
    • http://vibulowivez.epizy.com/net_framework_4._0_full_windows_7.pdfIn PDF document text
    • http://nujafosedoke.epizy.com/rozuwuvobefizazosezuk.pdfIn PDF document text
    • http://mizixizomafupez.epizy.com/tapotenorodojejudolazix.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_off0000c8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DA 5552 bytes
SHA-256: 830e708c0691fa4977e6c2232131541d9415c187e3847fed10e97b53cca17c07
font_01_sfnt_off0000dbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 10224 bytes
SHA-256: 9ddd0b9abb693bee8b7fe61a33955c3739fae8e2c11998e6ed2b6a0f37bcf98a