Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c1e76ce7e78a36…

MALICIOUS

PDF

75.3 KB Created: 2021-01-18 10:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b194a95bbc9f1a962b0e498ea43d3e23 SHA-1: 2fc1a18eb5615de9e11c846a350d08d2671e0c13 SHA-256: b0c1e76ce7e78a36579fabaecca8233d6e48b144ef2d7d91f558d90ed8499aa9
136 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
  • 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://jacksth.ru/123?utm_term=wavelike+muscular+contraction+of+the+gastrointestinal+tract+is+called PDF link annotation
    • https://cdn.sqhk.co/rivogigaweb/hcnjj3C/baby_listening_to_nursery_rhymes_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417992/normal_5f9ebc21cbb9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378857/normal_5fcccccd57f9f.pdfIn PDF document text
    • https://cdn.sqhk.co/jevikepuja/H1Sjjgg/woxuwomiwixuji.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/bihBia2/39196974648.pdfIn PDF document text
    • https://cdn.sqhk.co/pawijilabu/9yRzTTv/82277775955.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/ie3ClZv/34693820572.pdfIn PDF document text
    • https://site-1175354.mozfiles.com/files/1175354/fox_news_live_stream_free_planet_news.pdfIn PDF document text
    • https://site-1199825.mozfiles.com/files/1199825/zombie_killer_attack_multi_guns.pdfIn PDF document text
    • https://cdn.sqhk.co/dejojoduzi/5qjajcV/97787034174.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/FnUjiRC/mind_games_john_lennon_chords.pdfIn PDF document text
    • https://site-1177689.mozfiles.com/files/1177689/vlookup_excel_between_two_sheets.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/jolunenafobuw/surge_arrester_for_dry_type_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/highland_cow_head_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/calibre_free_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/jason_bourne_1_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/bangla_to_urdu_dictionary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/a_k_letter_wallpaper.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_off0000e7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DB 5572 bytes
SHA-256: 1b2636d176347ec68d3ab52257edbe8b5686facc5a9cd5365d4e91a6bb246733
font_01_sfnt_off0000fab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 10944 bytes
SHA-256: 34a4455eafca8a34a1ab7b16e1c4ddee4a0af3e22ee953b390b9de7d1822f84f