Malicious PDF — malware analysis report

Static analysis result for SHA-256 298524e312e768dd…

MALICIOUS

PDF

68.0 KB Created: 2021-03-02 17:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8c07b5114cc2e5684305ceae191e7615 SHA-1: 9fccb424bf62f2abc1d0cb64b9168bde7c09dbdf SHA-256: 298524e312e768dd8cd70a87ce680ad0c6cf5707474acc0a612ab2672384b790
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/award?keyword=is+there+a+riding+trainer+in+undercity PDF link annotation
    • http://prechambre.xyz/dafasawevebojikademaxab4pah.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_60347486d9cab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_600e7ec11da38.pdfIn PDF document text
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/2314891.pdfIn PDF document text
    • https://cdn.sqhk.co/dofowaduz/21rji61/assistir_videos_offline_youtube_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389366/normal_602f3a42e8080.pdfIn PDF document text
    • https://wuvumivew.weebly.com/uploads/1/3/1/4/131410662/dbafa5dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402478/normal_60063893dbe80.pdfIn PDF document text
    • http://fastcreditcheck.info/120015628663fyx4.pdfIn PDF document text
    • https://cdn.sqhk.co/segenoliz/jdhghf4/blackpink_songs_english_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fd296fbecd2f.pdfIn PDF document text
    • http://septiki-rf.website/kroger_weekly_ad_mechanicsville_va6syr9.pdfIn PDF document text
    • https://lejalebenepuk.weebly.com/uploads/1/3/0/7/130776022/kogaxir_zosexetin_fanuzok_mitunetufat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444353/normal_600bb0fc838e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_5fd7cee2c6120.pdfIn PDF document text
    • http://larts.digital/80601542403p67en.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5fe49dd293222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rivamuboxu.epizy.com/26192728232.pdfIn PDF document text
    • http://xolazituvote.epizy.com/37476443653.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_off0000cea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA8 5208 bytes
SHA-256: 63c1994249178659af9eea748c360ebcf9147ed62e478cc88d18613eac129dac
font_01_sfnt_off0000e05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05F 10016 bytes
SHA-256: d8aaa404702ef5c79616b4712b04013330866be9c86fff73a24f3e441f94b5ad