Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a6ce11ae1db057…

MALICIOUS

PDF

79.6 KB Created: 2021-01-29 22:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1894e7471c3436cac5f77e3dbf7334ec SHA-1: 8fb577556fb44ae26b467abbf7c00d75a779ec30 SHA-256: b1a6ce11ae1db0573efc9b756258fb343f885bb30ed92afc4fd389fb4996a20f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wb?keyword=radio%20italy%20live%20palermo PDF link annotation
    • http://vodaxuf.iblogger.org/buzekefifewasekusoxuba.pdfIn PDF document text
    • http://lalexejiwisejul.iblogger.org/48841870762.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/ravuxudibure/beverage_definition.pdfIn PDF document text
    • http://vixoboguwexalo.rf.gd/ded_1st_year_books.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/6737664846.pdfIn PDF document text
    • http://gamutazuzores.epizy.com/49673882979.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/nestle_india_sustainability_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/example_of_accomplishment_report_in_filipino.pdfIn PDF document text
    • http://vuxubeso.rf.gd/bajrang_dal_song_dj_2018_audio.pdfIn PDF document text
    • http://vavijiguzedimeg.epizy.com/set_android_sdk_path_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/blockman_go_blocky_mods_hack_apk.pdfIn PDF document text
    • http://nupadamemal.epizy.com/financial_reporting_and_analysis_revsine_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/33938755111.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/citizenship_article_5_to_11.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/tutorialspoint_data_structures_and_algorithms.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/73711776396.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/39921971610.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/77943886283.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_off0000f81b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81B 5096 bytes
SHA-256: 884b3ba4300de1242f0c3b064f2bf32e245d0c4c095e3a424d9baa9c3584903f
font_01_sfnt_off00010970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10970 12100 bytes
SHA-256: e1ccb20157df4d82aabfbb1a0541cb7d2039b637f8c40355573d16aa6e76603e