Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32abe901f85a3ae…

MALICIOUS

PDF

71.5 KB Created: 2021-03-01 00:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f391d9bbdae19e5c9abbe9d9c1e76a7d SHA-1: 333a7adeae08232207c36ade73d0bb281e40859e SHA-256: a32abe901f85a3ae059439689a025473d30ba7d2e870a2cc3642568153c9169e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://midufefew.ru/wix?keyword=what+is+a+mouth+geography+term PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fd7b15588508.pdfIn PDF document text
    • http://petrol-v-pol-price.site/hollow_knight_mushroom_ending_guidexpmdc.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/icgh6xd/skullduggery_island_trading_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380674/normal_600a924e842cd.pdfIn PDF document text
    • https://jewakazakiven.weebly.com/uploads/1/3/1/4/131437085/nidarokotinexa-susuna-rawamokiroke-morig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478133/normal_5ff7ad836b29c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378410/normal_5ff8467ab6675.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/gii1gg4/movistar_el_salvador_planes_prepago.pdfIn PDF document text
    • https://kunefenirubineb.weebly.com/uploads/1/3/0/7/130739500/0a5dba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5fe81eebb13a5.pdfIn PDF document text
    • https://nigerizebamogut.weebly.com/uploads/1/3/4/5/134596745/wolafumemado.pdfIn PDF document text
    • https://tumokisomagen.weebly.com/uploads/1/3/4/8/134897409/watejumopapesin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA28 5316 bytes
SHA-256: b590c0090b9d5f2c8c6cdc7b09334b760b216e593092bc86d10306400bfd7535
font_01_sfnt_off0000ec26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC26 10932 bytes
SHA-256: c4312c6f335a3e72cb63a624582ca690b437d584cdfd3dbd7f7c954b17535042