Malicious PDF — malware analysis report

Static analysis result for SHA-256 38236eda8df1a483…

MALICIOUS

PDF

69.0 KB Created: 2021-02-20 13:22:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d4674a7212be80e4c0cbabf2b89c6db6 SHA-1: 41f03158559a3abc4401c99334319611f321e735 SHA-256: 38236eda8df1a48338f0e96fa34985fa1ed122a43dee1a388f6132b6931a6bc4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/aws?utm_term=principios+de+economia+gregory+mankiw+libro+completo PDF link annotation
    • https://cdn.sqhk.co/tipusuzog/diidBhi/the_sims_bustin_out_skills_cheats_ps2.pdfIn PDF document text
    • https://laxukiwu.weebly.com/uploads/1/3/1/0/131070933/2533279.pdfIn PDF document text
    • http://manthoughtswebsite.website/luregivotakimedowigavuseeisp.pdfIn PDF document text
    • http://899themes-demo.ru/ddal08-_01l9g5d.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/klwgjih/48703288336.pdfIn PDF document text
    • https://cdn.sqhk.co/xizaxulubezu/Vhb6GXG/56636373440.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/eTjhGeA/lumber_yard_iowa_city_ia.pdfIn PDF document text
    • https://nagaleburanab.weebly.com/uploads/1/3/4/3/134379557/lalozulotoxevawi.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/1zaFCPP/winob.pdfIn PDF document text
    • http://trenolgia.buzz/jkbose_10th_date_sheet_kashmir_divisionco0pw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://babematalal.epizy.com/lineage_2_kamael_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/leverage_role_playing_game.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/european_gastroenterology_guidelines_ibs.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/57912988915.pdfIn PDF document text
    • http://nanoxamovafosox.epizy.com/50743572234.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_off0000ce8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8B 5792 bytes
SHA-256: f005180cd447856208c0593e47bf9fd636ffb67b47e5ea348a3f531775f8f0ce
font_01_sfnt_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 11116 bytes
SHA-256: 07012df3b4f519bbfbcc43e2c6a99c292dbf30a0a5839c56f2e9893bf17285de