Malicious PDF — malware analysis report

Static analysis result for SHA-256 0252c619fca8297f…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 16:22:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: ee2770b612732ff9ff1763a71c9808fd SHA-1: a2296ee072a0afe0152fdedfb1e8174a63e4fb0d SHA-256: 0252c619fca8297f52aba19b9cb5f8ac7a8b969f6c239fe110570d3ad131cd0b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/shook?utm_term=steamboat+springs+airport+car+rental In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472475/normal_5fd328c9ba59a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484107/normal_600eb0a287862.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_6004e09dec74f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449622/normal_6002a0adf3a90.pdfIn PDF document text
    • http://fragcups.com/cantina_song_piano_sheet_musicgnx3j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_60283bfa84214.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469386/normal_5ff8b22852c61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366637/normal_5fe449968f5fc.pdfIn PDF document text
    • http://ligorowimilupux.22web.org/50399606775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_600fb588a150f.pdfIn PDF document text
    • http://edevletorg.com/nj_garden_state_parkway_south_traffic_reportye2jd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491169/normal_600b0302b9984.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402478/normal_5fcc3c222c17d.pdfIn PDF document text
    • http://galoomer.online/28003381418secv8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibuxidon.rf.gd/budget_spreadsheet_template_uk.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_off0000cc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC97 5496 bytes
SHA-256: 88e67b0131b30841f57928c80c01affb045e720681602b6e3124315ddfffb4d6
font_01_sfnt_off0000df2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2C 10468 bytes
SHA-256: 40c6ab640d543d42cac7b8bee97cb5088a6490d9f296d44491a4fb1de3f72eee