Malicious PDF — malware analysis report

Static analysis result for SHA-256 df665abba65119a5…

MALICIOUS

PDF

83.8 KB Created: 2021-02-25 10:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4d3e3181cb89ae37ac77c6f936e9c01b SHA-1: 9139f573f382c5030d4d32d87d8e36d912fa4f6e SHA-256: df665abba65119a5e5d2026032743ebb59cf03d81515cdc97084c2d82c2b1b3d
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://leonvi.ru/award?keyword=scientific+method+lab+middle+school PDF link annotation
    • http://arfesopt.com/tenth_avenue_north_control_sheet_musicetxfj.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/TbxNgiq/totebirokeribigowunowazop.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/stock_market_tips_for_beginners_india.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403260/normal_600e9a924fda4.pdfIn PDF document text
    • https://cdn.sqhk.co/sisagoku/SjjPjgt/barajotijubasinogape.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/gopivadamex.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/what_did_the_government_do_to_help_the_great_depression.pdfIn PDF document text
    • https://cdn.sqhk.co/vumatoxikom/8aihie4/sepavivegaki.pdfIn PDF document text
    • https://cdn.sqhk.co/duputokodoz/fha5ieq/turbo_dismount_full_game_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455207/normal_6030e10e25d51.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/najubu/93906927299.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/bobonowotofawowowef.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/adjusting_journal_entries_in_quickbooks_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/lawopizivigewurilanitad.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/canon_eos_sl2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/birkenstock_size_guide_us.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/xegotoziwevosexukal.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/sora_anti_form_kh2.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_off00010d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D11 5408 bytes
SHA-256: ceae285064762bf4a7aba3efa745ef682b5c42222500dd821eceec49bbdf254b
font_01_sfnt_off00011f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4F 10196 bytes
SHA-256: 7743264acd1c72e270d572dab0d26c3c33b22f4b2d84dcbe594a9c8df621a0c1