Malicious PDF — malware analysis report

Static analysis result for SHA-256 1963b613e5d039aa…

MALICIOUS

PDF

68.4 KB Created: 2021-02-12 22:59:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 914ddf9ccff981f075ca2428322c0bb4 SHA-1: 85df91e6f80e60a052a1760ea2b89603b0f53fde SHA-256: 1963b613e5d039aa956987c9c2635925af3e4b6b19efae555bec98b2dab582e3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://druttle.ru/wb?keyword=friend%20zone%20thai%20movie PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387565/normal_600900d968f9b.pdfIn PDF document text
    • http://buxewufa.iblogger.org/konuzipasob.pdfIn PDF document text
    • https://jadilibetaz.weebly.com/uploads/1/3/4/8/134871175/b6c2e69b353.pdfIn PDF document text
    • http://zavudonalu.66ghz.com/74015286157.pdfIn PDF document text
    • https://bowefolezoz.weebly.com/uploads/1/3/1/4/131407704/1411cb56cec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fc602d18addf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473023/normal_5fff6242c1fcf.pdfIn PDF document text
    • https://gakujoxabusu.weebly.com/uploads/1/3/5/3/135394689/eafece0ee093f04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wixevudu.epizy.com/guidelines_for_asthma_exacerbation.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/phonetic_language.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/ios_7_messenger_apk_free.pdfIn PDF document text
    • http://wipedeposadav.rf.gd/how_is_a_thyroid_biopsy_performed.pdfIn PDF document text
    • http://bokubipojofoji.rf.gd/gastroenteritis_viral_pediatria.pdfIn PDF document text
    • http://bapomel.epizy.com/25021955050.pdfIn PDF document text
    • http://daporanil.epizy.com/lactic_acid_metformin_side_effects.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_off0000d0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C8 4920 bytes
SHA-256: 617503780a2f1eae5333a944a49284abd9b2fe08eabd9119b951855130a94e6b
font_01_sfnt_off0000e165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE165 10412 bytes
SHA-256: e394ccf8282f27ddbffdf5b489cc7ef5bd3d4a6028a65209069119307f3dec08