Malicious PDF — malware analysis report

Static analysis result for SHA-256 3999d61a5f754f0c…

MALICIOUS

PDF

70.9 KB Created: 2021-02-15 23:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b986a50e04bb0e0a73ac3566c62e0e69 SHA-1: 68dd8ceab1e72887482148fabaf02decbd34f9e7 SHA-256: 3999d61a5f754f0c6efd24ca9a43399c3ba26a785083040fcc9fa051169a6630
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://leonvi.ru/aws?utm_term=what+is+the+best+battery+lawn+mower PDF link annotation
    • https://cdn.sqhk.co/mofinopedas/gfji6SA/ac_odyssey_atlantis_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/lgzc6jb/helicopter_parent_quiz_college_students.pdfIn PDF document text
    • http://rimaloxal.22web.org/64166707882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_5fda88455ebc7.pdfIn PDF document text
    • http://7gusevshop.website/ancient_history_magazineycjnd.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/6hgnC3J/jusabuvezifij.pdfIn PDF document text
    • https://cdn.sqhk.co/bovutolomevo/jjVhdJb/ribemaxoruwe.pdfIn PDF document text
    • http://tiktokfrance.fun/vibodefemazebug6jnae.pdfIn PDF document text
    • https://fukaxoxatu.weebly.com/uploads/1/3/1/4/131438517/8ad7cb473b50c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_5fd35100d8595.pdfIn PDF document text
    • http://ttttrrrr.space/gonafujede905iz.pdfIn PDF document text
    • http://onenature.space/nifupasuxafajubofelonidogm0hgd.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/mriEgg5/73384103590.pdfIn PDF document text
    • http://loxokunetuladi.66ghz.com/limits_worksheet_day_5.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/jgjjjgM/rodonasidaposilazi.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_off0000d949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD949 5272 bytes
SHA-256: fd2ff0f3013540f8ef08df03cb53034a4400c4b722a29c07c8bcf6176e27aa0d
font_01_sfnt_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 10404 bytes
SHA-256: f454e561c9f3133f5cd2a1232a53810dc444a5dca3b9768a073609d4c6e8685e