Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fbacc3c5ae06fb3…

MALICIOUS

PDF

70.8 KB Created: 2021-01-28 21:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b0c4f827074feab0270ce06c6802d323 SHA-1: 4ad186b72963cfb966ec34fa4e5702d3adcc6d18 SHA-256: 7fbacc3c5ae06fb3c9af693d7dfff1af63adf8183639e2e255e3191d43b198fb
144 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/wb?keyword=donde%20recarga%20amigo%20entretenimiento PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4498345/normal_5fefdce948519.pdfIn PDF document text
    • http://afracheat7.xyz/59537383389ehx5x.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/96937889669gv96l.pdfIn PDF document text
    • http://ch-data-2a8fv9s.pw/96568397416z8lwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381091/normal_5fed5f369e406.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/b0iiVFx/55713165178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fd9b8cb3f419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404984/normal_5feda44b04e9e.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/sivanira/23747715359.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/20473771838.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/calendario_didattico_unimib_informatica.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/c_form_application_haryana.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/beeruva_movie_songs_naasongs.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/35725644625.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/kexojumubajite.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_off0000d6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F2 5048 bytes
SHA-256: a495c5cb711754401014afb78244317a7f23f05b9fe492c84b29fabab8800011
font_01_sfnt_off0000e80e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80E 11256 bytes
SHA-256: 621936f326ea1364076ab718d431f8eb93595b15789bd7d883797a8c7dfcf309