Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1a6b7da680adfc…

MALICIOUS

PDF

74.7 KB Created: 2021-02-11 16:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a0200df43dbc840a516b47d9bd8f807d SHA-1: 13e93487c12fa04d12e6a4ae89ee14267013e7ee SHA-256: 2f1a6b7da680adfc89280d486d960ab342ea73e146940d9ddfb0bf6226e5a094
156 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/wb?keyword=homerton%20university%20hospital%20cqc%20report PDF link annotation
    • https://cdn.sqhk.co/vazoguzo/hjdgeXX/genipiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448121/normal_5fe0a6f1e0767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470828/normal_5fefe3f456f74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416671/normal_5fefe06c02615.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/6StCbig/warure.pdfIn PDF document text
    • http://antonioit.space/aprendizajes_clave_biologia_secundariaq9olj.pdfIn PDF document text
    • http://airned.ru/435634119348ilno.pdfIn PDF document text
    • http://dompodklyuch.com/formato_cuentas_t_para_imprimir1iyyj.pdfIn PDF document text
    • http://akvatehnika74.ru/bosquejos_evangelisticos_para_predicargy0xz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5fff5cd2219eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471946/normal_60165ec8e11c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/gasilugejugujopika.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/69877721460.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/bollywood_movies_2014_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/31692980634.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_off0000e799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 5420 bytes
SHA-256: 749cc68d3098042044a1319916f44ad399755e78c3d46e77e07a19f4662ff420
font_01_sfnt_off0000f9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E8 10600 bytes
SHA-256: b2aaf71aa33193c652e656a6674b913a911dc4759e9516a8b096e407b86971fc