Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4cf10d3f16ccc8b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-13 01:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5ad780ef99cc046f71859bd2b3b4faa7 SHA-1: d2b3f87a65404d8c0ef0afeac4b6038d0ddefed2 SHA-256: d4cf10d3f16ccc8bb1068241b04da90b6dc11f6efbdd39f009da140c908b1242
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://leonvi.ru/wb?keyword=infidelity%20in%20suburbia%20parents%20guide PDF link annotation
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/5899591.pdfIn PDF document text
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/rarunuz.pdfIn PDF document text
    • https://cdn.sqhk.co/monazaxumol/gcrnhbO/dofulukoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/jiijgib/super_mario_world_secrets_level_1.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/jcidEjE/slices_puzzle_fruit_mania_2019.pdfIn PDF document text
    • http://vumavotanumibuv.iblogger.org/70433344030.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/064Gzxi/foxodukufej.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/xgi7icX/13924511205.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wexereza.rf.gd/17757704572.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/south_carroll_high_school_athletic_forms.pdfIn PDF document text
    • http://wiwawilif.epizy.com/95124043643.pdfIn PDF document text
    • http://vowupesagol.epizy.com/championship_manager_01_02_without_disk.pdfIn PDF document text
    • http://xeravujowa.epizy.com/waramululifefebekafifik.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/ragile.pdfIn PDF document text
    • http://migusopugaj.epizy.com/toxic_wap_shazam.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_off0000d5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5ED 5388 bytes
SHA-256: 3e53ab3d6724a95acec3bc4277b343b52ff411b6ec0af9b2c1bfb6434f8bb19e
font_01_sfnt_off0000e856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE856 10704 bytes
SHA-256: 94126eb145b47e8855f663b79b24ede913dd9c1a2b2bf90fbff9e8e98ef80130