Malicious PDF — malware analysis report

Static analysis result for SHA-256 024f67bb43938c11…

MALICIOUS

PDF

69.8 KB Created: 2021-02-14 14:15:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d3870a6e45d99392b73232b0d5d56854 SHA-1: 63be3f6194d4956444ac3c5ff165d5380af70aaa SHA-256: 024f67bb43938c11286509e93e42172b8a783eefea2dc3eae62a1a6d452da62e
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=market%20leader%20intermediate%20business%20english%20answer%20key PDF link annotation
    • https://cdn.sqhk.co/wibezudak/dibtjgd/tie_dye_hoodie_wholesale_canada.pdfIn PDF document text
    • http://fridgeservice.ru/pejuxebubawudonixevats4ei.pdfIn PDF document text
    • http://jobudafeva.22web.org/bay_house_sixth_form_contact_number.pdfIn PDF document text
    • https://cdn.sqhk.co/dekibipun/idhbiag/95223656078.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/jalii5n/tribal_wars_2_player_stats.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/i9iH96m/febuweramaxarajosapim.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/cjeelha/cowboy_hat_styles_for_face_shapes.pdfIn PDF document text
    • https://cdn.sqhk.co/fusexabuvej/8dggTPz/nfl_schedule_week_13_odds.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/uIjjGy7/dupudejuzomu.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/ggiagjS/tireseli.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxuduxexi/jhjNvgh/sojukasogonuxineweni.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/fQbnigL/best_price_on_ipad_128gb_7th_generation.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/WhdGgOa/gujitegix.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/tonemakopinibem/datibitimurusudusivik.pdfIn PDF document text
    • http://jetumodegupejit.rf.gd/22988265224.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_off0000d30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30A 5644 bytes
SHA-256: 525611f9ef0d96f0e517ab0a4c2dd92c73e8e74516ed3ca43df916f1a2116c29
font_01_sfnt_off0000e638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE638 10532 bytes
SHA-256: 9bdec544a9b8dd94d611aae991c4363689501adf6ae2acb93103d76ab235ee00