Malicious PDF — malware analysis report

Static analysis result for SHA-256 386c97856f2d086a…

MALICIOUS

PDF

70.2 KB Created: 2021-02-19 19:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8a9eb57b9c06f2985d304d1f29f09093 SHA-1: 1ccb9d7becd6981a10bb95062d34a470430f8ba7 SHA-256: 386c97856f2d086aebad4b663cea009c0c7ffbadb78149de937966d97a6b0c86
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://jottigo.ru/wix?keyword=abnormal+psychology+comer+9th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/vupapevixu/eMTiajf/art_deco_sculptures_for_sale.pdfIn PDF document text
    • http://fametasubub.22web.org/52676380773.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/Jwljijj/52965648406.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/cllDjbc/can_stars_fall_to_earth.pdfIn PDF document text
    • https://cdn.sqhk.co/karelevo/bjbgggi/59719380905.pdfIn PDF document text
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/3483459.pdfIn PDF document text
    • https://pigokujedaxe.weebly.com/uploads/1/3/0/7/130740563/lukipamefonopi.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/idsSDih/91127887656.pdfIn PDF document text
    • http://dekupedatibidal.iblogger.org/total_quality_management_principles_summary.pdfIn PDF document text
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/1840873.pdfIn PDF document text
    • https://bazojosazim.weebly.com/uploads/1/3/6/0/136086377/8626343.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/ajj2uDD/stack_ball_apk_earn_money.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/koieEgj/nelev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wosimudekefa.rf.gd/warranty_letter_format.pdfIn PDF document text
    • http://lewozato.epizy.com/does_damon_end_up_with_elena_in_the_books.pdfIn PDF document text
    • http://vexidolovosope.rf.gd/autonics_tzn4s-_14r_user_manual.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_off0000d388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 5956 bytes
SHA-256: 28dca7ff5aa18a1fa63c63e25f465844101ffdcbf685be1f47173d45ab20ce36
font_01_sfnt_off0000e79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79F 10420 bytes
SHA-256: 78bceb0213a23a4d7e8d15cb907a081a8aba8230f0ad28f1d033101898a7214e