Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0091ebc4b6156b…

MALICIOUS

PDF

69.4 KB Created: 2021-02-15 08:03:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 839bec7a1ecb96d52ca8ff7566a847b4 SHA-1: 660bf4fc29b97250220de2346b02d3da3c59ba46 SHA-256: 6b0091ebc4b6156b56c7c084268b0719f2b65579bc52cf52c3656dade2d41c25
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/aws?utm_term=acronis+universal+restore+2018 In PDF document text
    • https://cdn.sqhk.co/rajemaramiw/cieIoje/watch_shows_with_friends_online_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_60146f7eb6c12.pdfIn PDF document text
    • https://cdn.sqhk.co/lajakukilo/hfhbwNJ/9063414761.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/Kqiiif1/bridal_makeup_salon_in_lahore.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/jihaIhd/fasajipalaxedov.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/bEjbqjg/wugipikoroso.pdfIn PDF document text
    • https://cdn.sqhk.co/tefaxobaf/iggcRmb/19450146601.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/qqWpghp/alphazero_vs_stockfish_games_pgn.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzememub/c1lBajd/new_puzzle_game_for_toddlers_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pijujuweg/PhfggWI/80746654800.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/Gtihgfv/learn_to_sing_in_tune_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481988/normal_6012cb8b61c50.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/dotivaf/42018772693.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/5954329794.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/lifowilik.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_off0000d060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD060 5364 bytes
SHA-256: c4c89b1b0ecfaff0fca17270f9c07ab83ec87e29839f0a7db689d46dc25f01b7
font_01_sfnt_off0000e2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B1 11108 bytes
SHA-256: 1401b73f6cb31ade3568aac89fa396fafef440f7dc2b1cf94ba3db2da2fefb06