Malicious PDF — malware analysis report

Static analysis result for SHA-256 45693f35f77c4a39…

MALICIOUS

PDF

80.9 KB Created: 2021-01-26 22:30:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: abe1458a4c621500f89003670de2fa72 SHA-1: c9721b4c46c62e8bfb10146159d910fd4130ddd9 SHA-256: 45693f35f77c4a39d95ed96721303acbda94388b8269880bb06ad1c4bdf4281b
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=todoist%20mac%20shortcuts PDF link annotation
    • http://reactivascotia2020.com/wink_smart_home_out_of_businessma8qm.pdfIn PDF document text
    • http://moresukko.ru/sweet_sins_superstars_mod_apklwoxi.pdfIn PDF document text
    • https://rakulemiz.weebly.com/uploads/1/3/2/6/132682689/c398920d75fb35.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/OqT1iaF/vovebijupituxatimuza.pdfIn PDF document text
    • https://tofigota.weebly.com/uploads/1/3/0/7/130775321/2776246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5fe7a9ffa90bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368735/normal_5ff3a0936a1d2.pdfIn PDF document text
    • https://zugudomumomaxix.weebly.com/uploads/1/3/5/3/135324912/6470087.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365608/normal_5fe0b8d3164f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487902/normal_5fd0e864e5c00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5fd1214620494.pdfIn PDF document text
    • http://adyga.site/jigubadutopupinoruw680y5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469640/normal_600264f30b15f.pdfIn PDF document text
    • https://github.com/mgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/falevi/dogineviguzagowanofuza.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/62941100564.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_off0000fec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC2 5096 bytes
SHA-256: 3e4dbda88f761fc59d467ee3e4e0b4abff07f63b16e6cc92c9ba789d669d4a10
font_01_sfnt_off00010fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE1 11588 bytes
SHA-256: 1074809a294fb080d13fbf9eed41b79f4ee62ab9e7385ce1ca43c326bbe18fac

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