Malicious PDF — malware analysis report

Static analysis result for SHA-256 af8818709e8a93ce…

MALICIOUS

PDF

69.7 KB Created: 2021-02-23 00:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b3ebdaf7e36a86ad296ba15424761826 SHA-1: 6808b0c58eb88a39ebb567fe198ad55f144d54cd SHA-256: af8818709e8a93ce33b9e57934073eca0eb924b1f1233fdb4a3e47a31d6e6610
176 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
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://seumenha.ru/wix?keyword=eproxy+apk+app PDF link annotation
    • https://cdn.sqhk.co/nesadatifu/jjajjhh/police_drift_car_driving_simulator_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477863/normal_5ff44f313ad7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480174/normal_5fd1cd059f0e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497687/normal_5ff417d12d0f9.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/icZyifE/dubufet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457577/normal_6029acc07691f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_6024470b15feb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fe2db19c6f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_6021d5e4d83d0.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/GQjdhaj/78884983632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_5fda3b278dd9d.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/bexolamabad/artifactory_latest_release.pdfIn PDF document text
    • http://vawolanuxoreg.epizy.com/love_yourself_answer_bts_album_list.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/wallpaper_engine_android_anime.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/brothers_in_arms_game_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/dhaka_university_admission_test_information_2019.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_off0000d5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D8 4796 bytes
SHA-256: f5d4e16adddcc85ce5f27ee54a32bd13d13b962318859803e1e9ecd017c9bfe3
font_01_sfnt_off0000e647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE647 10588 bytes
SHA-256: c26486595997144d129bfb5e8d64492da5e3a37f4f4a149745e026fbae2e109c