Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f3fb164db22be52…

MALICIOUS

PDF

73.9 KB Created: 2021-02-17 18:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: deff64c0841f5333cf43cf04432ca505 SHA-1: b97fb45ccc026df4df09242e2a5ca320b5eacc3b SHA-256: 6f3fb164db22be5231e156f47bc22e007ebcc9a004e74bad669efebede221587
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/123?utm_term=rt-ac68u+default+name+and+password In PDF document text
    • https://cdn.sqhk.co/tegimatararo/hria3ie/miracle_noodles_ingredients.pdfIn PDF document text
    • http://apkweb.net/lusikunavvzr4k.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/5lc3kie/ninja_foodi_air_fryer_xl_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1po1trq/dead_cells_update_switch_rise_of_the_giant.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/9HhiMhe/is_online_hangout.pdfIn PDF document text
    • http://organic100.fun/metric_conversion_worksheet_1-402eyux.pdfIn PDF document text
    • http://ultra0.space/1668852081dbanq.pdfIn PDF document text
    • http://stalekost.site/7377298572598fcs.pdfIn PDF document text
    • https://cdn.sqhk.co/ridefapagol/cA40FrU/pakegomotagududo.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/aQN3gjC/31584027181.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/aFr9jbq/race_master_manager_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/TNyhhlM/jokaxutapufexixasa.pdfIn PDF document text
    • https://cdn.sqhk.co/gipagigo/AgiEjhc/ballet_classes_near_me_for_10_year_olds.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/popilo/dmrc_metro_map_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/whatsapp_gb_latest_version_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/89661886939.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/convert_metric_to_us_customary_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/do_actively_managed_funds_outperform_index_funds.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_off0000de40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE40 5780 bytes
SHA-256: 70166734180ef027b108c1e07c9dd3c941af7a56a247ab360c0998c32043bcbc
font_01_sfnt_off0000f1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F3 13648 bytes
SHA-256: f0feedbc9b218a687fc0ee10808a26eeee4abc2159255f24263f77fabd8573a6

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