Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f2c58e01d79986…

MALICIOUS

PDF

79.3 KB Created: 2021-02-28 19:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 78745a5b85ab44899d16245337b23506 SHA-1: acc5f0925ad871e536d609fe4c8604093846d7e7 SHA-256: 36f2c58e01d7998627eec763642d79c33f148ff19ba1ba7a3d05c571caf85e6e
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://yafferge.ru/wix?keyword=bc+hockey+player+paralyzed In PDF document text
    • https://cdn.sqhk.co/raninogozo/gi6ifji/pisanamubokisinuzuxowaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/Ojfjjge/download_luxy_poker_online_texas_holdem.pdfIn PDF document text
    • https://cdn.sqhk.co/rovovuroj/bPjijc6/paypal_card_reader_for_iphone_xr.pdfIn PDF document text
    • http://info-pages.ru/california_king_egyptian_cotton_bed_sheets08yzs.pdfIn PDF document text
    • http://cadenalia.com/prayer_for_your_godchildgerex.pdfIn PDF document text
    • http://wutoniwes.iblogger.org/57646897923.pdfIn PDF document text
    • https://cdn.sqhk.co/kinerufi/KjiwyP6/47794093786.pdfIn PDF document text
    • https://polavimiwusirew.weebly.com/uploads/1/3/2/6/132681763/fcc348d.pdfIn PDF document text
    • https://gewujezugiwo.weebly.com/uploads/1/3/4/7/134754524/79ad27.pdfIn PDF document text
    • https://naviguxiva.weebly.com/uploads/1/3/4/2/134266723/fefexuwi-fefoli-ribaw-lifodalexutufa.pdfIn PDF document text
    • https://mutapeninudit.weebly.com/uploads/1/3/2/7/132712174/vobabudokazejadegezi.pdfIn PDF document text
    • http://azorocheat1.xyz/marriage_vedic_astrology7fyvj.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/ropuba/hailstones_and_halibut_bones_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/informer_movie_2008.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/material_requirement_planning_process.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_off0000fab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 5248 bytes
SHA-256: fc49d0006c2010e02e673abb745bd1b3d98255ffeba9f1e497b17fe4bb12e85e
font_01_sfnt_off00010c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C95 10560 bytes
SHA-256: 1193ca59a0cbc5417c715ea9979560584fd039431dd2d7f88b00781fd01803d3