Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d484fc8ee87eda…

MALICIOUS

PDF

78.1 KB Created: 2021-02-28 05:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2374987bd6f0d0b917fb46c3d83b325d SHA-1: 8708e05910cbf4ece4ac36c626ff858363f849aa SHA-256: 89d484fc8ee87eda77cb2a41a6401e16e1e6d28b409d50ed8f17e1d9f22f3acc
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=how+to+reset+locked+iphone+5s+without+computer In PDF document text
    • https://static.s123-cdn-static.com/uploads/4427499/normal_5fc836b92b18d.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/CjJijcA/podiwuvi.pdfIn PDF document text
    • http://tokigarodam.22web.org/project_scope_management_processes.pdfIn PDF document text
    • http://xigegojaliku.iblogger.org/kutilaxu.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/tiny_homes_plans_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/j6UgjFm/91290080061.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/74750215183.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuputes.atwebpages.com/kabukununoxowuzarajafomi.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/how_do_i_use_ecg_on_apple_watch_3.pdfIn PDF document text
    • http://lexobodigoke.epizy.com/android_games_like_diablo_3.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/simatuk.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/whistle_baby_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/models_of_software_architecture_design.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/kewenavipizavexizor.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/bhajan_dj_song_free.pdfIn PDF document text
    • http://laxuzakefojo.epizy.com/is_there_a_dash_diet_app.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/lay-z-spa_pump_leaking_from_bottom.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/minority_scholarship_form_2018.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_off0000f1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D6 5344 bytes
SHA-256: aee7a0cb307563c085533530f4f07ac1a873d0534773d455251867e8f4563b6f
font_01_sfnt_off000103f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 11932 bytes
SHA-256: d6808305153b4a2a59f3cc58534986085b3e40bb0bbbc63da9c3df51f6203b34

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